The best technical support and full Vehicle Suspension installation instructions. Lowest price Tacoma Vehicle Suspension guarantee and expert service. Toyota Tacoma, 2012 Vehicle Suspension by Timbren are available from For expert service call 800-298-8924 to order your Timbren Rear Suspension Enhancement System part number TTORTUN4L, or order online at
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Suspension Enhancement > 2012 > Toyota > Tacoma

Timbren Vehicle Suspension for the 2012 Tacoma by Toyota

Timbren Vehicle Suspension

(316 reviews)




Shipping Special

Shipping Weight: 5.18 pounds


Timbren Rear Suspension Enhancement System - 2012 Tacoma by Toyota

Hollow rubber springs sit above the axle, helping to stabilize and level the Toyota Tacoma while providing a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.


  • Improves suspension, handling and safety
  • Provides additional support as needed so you always have a smooth, comfortable ride
    • Allows the leaf spring ample movement while cushioning light loads
      • Does not affect the empty ride of the Toyota Tacoma
    • Becomes more rigid as more weight is added
      • Increases stability - providing great performance while hauling heavy loads
      • Reduces Toyota Tacoma sag
  • Works independently - side-to-side
    • Helps compensate for off-center loads
    • Reduces body roll when swerving and turning corners
  • Acts as shock absorbers, taking the brunt of bumps and rough roads
    • Extends the life of your Toyota Tacoma's suspension


  • Includes 2 Aeon hollow rubber springs, Toyota Tacoma-specific brackets and hardware for simple installation
    • Replaces axle bump stops on frame
    • No drilling required
  • Capacity: 3,000 lbs
    • Do not exceed the Toyota Tacoma's weight-carrying capacity
  • Designed to work with a suspension system that is in good working order
  • Limited lifetime warranty - satisfaction guarantee

An example of sag on a truck's rear axle under a heavy load. The Timbren Suspension Enhancement System levels the Toyota Tacoma.

When hauling heavy loads in the cargo area or by pulling a trailer, you will often see the rear of the Toyota Tacoma sag while the front end rises. In these cases, the rear axle is handling not only the weight of the cargo, but more of the Toyota Tacoma's weight as well. Because less weight is on the front axle, the front tires are making less contact with the road. Overall Toyota Tacoma handling - traction, steering, and braking - is negatively affected. The resistance from Timbren's Suspension Enhancement System works with the Toyota Tacoma's factory suspension to keep the Toyota Tacoma level and improve your driving performance.

Diagram of the Timbren spring installed

The Timbren system has a Toyota Tacoma-specific bracket that will be bolted onto each frame rail above the rear axle. Hollow rubber springs are bolted to the bottom of the bracket and hang down to where the bottom of the spring sits one inch above the axle. The inch of clearance allows the existing factory suspension to operate normally under light loads and standard terrain, ensuring the smooth, comfortable ride you are used to.

Animation of a standard Timbren rubber spring

Timbren Suspension Enhancement Systems are designed to work progressively. When the hollow rubber springs are compressed, the convoluted design causes them to quickly collapse along the folds. Once the folds are compacted, the stacked barrel shape provides increased resistance, stiffening the suspension and keeping the Toyota Tacoma level.

Timbren suspension system works to prevent body roll

Each hollow rubber spring works independently to support the driver's or passenger's side of the Toyota Tacoma. This is helpful when you swerve or make sharp turns. Each spring is activated when it is needed, so body roll is greatly reduced. The independent action also works well when hauling off-center loads.

An example of a trailers swaying

Because the Toyota Tacoma handles better with the springs, less turbulence will be passed along to the trailer helping to keep the trailer in line. Your driving comfort is further enhanced if the trailer does begin to sway (from a gust of wind or passing of a semi) because the movement from the trailer is not transferred to the Toyota Tacoma. This also works to make the sway subside quicker.

An empty truck on a bumpy road without Timbren

Another great feature of the rubber construction is that the springs absorb most of the road shock, creating a smoother, more stable ride overall. Wear and tear on the factory suspension is also lessened as the rubber springs work to prevent bottoming out on rough roads.

Compared to the competition:

Timbren's suspension enhancement systems are much easier to install than air springs - no air hoses are needed to be run, no compressors or gauges to hook up, and no manual adjustments necessary. The rubber construction causes Timbren's springs to be more elastic than similar products constructed of micro-cellular urethane. More elasticity allows for a more comfortable ride because the rubber has more travel.

TORTUN4L - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren


Video of Timbren Rear Suspension Enhancement System

Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.

Video Demo Timbren Vehicle Suspension TTORTUN4L
Timbren Vehicle Suspension TTORTUN4L Review

Video Transcript for Timbren Vehicle Suspension TTORTUN4L Review

Today we will be reviewing part number TTORTUN4L. This is the Timbrand Rear Suspension Enhancement System. It is designed to improve suspension, handling and safety. These are going to be vehicle specific, so to make sure they are going to fit your particular year, make and model, you can refer to the vehicle list at the bottom of the product's product page. It's going to provide additional support as needed so you always have a nice, smooth, comfortable ride. It's actually going to allow the lead springs plenty of movement while cushioning light loads. It will not affect the empty ride of the vehicle.

It is designed to become more rigid as more weight is added, which is going to increase stability. It's also going to reduce vehicle sag. Overall it's going to provide better performance while hauling heavy loads. They are designed to work independently, side to side, so it's going to help compensate for off-center loads. It's also going to help produce body roll when swerving and turning corners.

They actually act as shock absorbers, taking the force of bumps and rough roads, which is also going to help extend the life of your vehicle's suspension system. It's going to include the 2 hollow rubber springs, the vehicle specific brackets, and all the hardware that's necessary for a simple installation. They are designed to replace the axle bump stops on your frame. For the installation, no drilling is required. They are going to offer a capacity of 3,000 pounds, but you want to be careful not to exceed the vehicles' weight carrying capacity. They are designed to work with a suspension system that's in good working order. So the way that they install is that you will have to loosen the axle U-bolt and remove the existing bump stop. Then you are going to mount this portion to the axle and the U-bolts are going to go over the flat portion here, right at the base of those wings.

That's going to help distribute and also keep the U-bolts in place. Once you have that on there, you are going to tighten the U-bolts back down. Now the hardware on this system is designed to be installed from the bottom, going up. So the head of the bolt has an Allen tool designed to it, so you will need to use an Allen key or an Allen tool to get it tightened down properly. There is going to be a washer located on the inside of the spring here. So you can see that there, peaking in there.

The washer is already installed, so you want to make sure that the washer is lined up with the mounting hole. It's going to set on that portion there. Again, the hardware is going to come up through the slots, making sure that it goes through the washer. Then you are going to install the lock nut through the larger hole here, making sure it goes down all the way on top of that bolt. So you may need to use an extension for your socket wrench to reach all the way down there and get that seated correctly. Now the actual bump stop, or the spring, is going to give us an overall length of about 3-5/8". That's going to do it for our review of part number TTORTUN4L. This is the Timbrand Rear Suspension Enhancement System. .

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Customer Reviews

Timbren Rear Suspension Enhancement System - TTORTUN4L

Average Customer Rating:  4.7 out of 5 stars   (316 Customer Reviews)

Hollow rubber springs sit above the axle, helping to stabilize and level the vehicle while providing a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.


by: Dan S.07/30/2013

The order and shipping process was flawless -- the Timbrens arrived exactly when E-trailer said they would. An hour after they got here, I had them completely installed. As of this date (7/30/13), the posted instructions (and the ones that came with the Timbrens) are not quite correct for a new Tacoma, as I verified with a Timbren tech. (These are Tacoma-specific issues -- they may not apply to other trucks.) Do not jack the truck up. I ran the back tires up onto blocks (to give myself more room underneath) and set the parking brake. I put a jack stand under the differential -- probably not needed. I crawled under and did one side at a time -- loosen the u-bolts, remove the old bump stop, stick in the new Timbren, and tighten. Not technically demanding at all. My crawler dolly was very helpful. Some tips: use a 9/16 socket with an extension to put the nut onto the bolt inside the Timbren rubber spring and then tighten the bolt with an Allen wrench. When loosening the Tacoma's u-bolts, use a 3/4 socket. Depending on the clearance between the leaf springs and the frame, you may need to remove one side of the u-bolt assembly to install the Timbren because the angle of the baseplate is greater than the angle of the OEM bump stop. I was told that the u-bolt nuts on a Tacoma should be re-tightened with a torque wrench to about 70 foot/pounds. I found it a little tiring to lay on my back and torque the nuts, but then again I am verging on elderly. A young person in decent shape should have no trouble. I don't know yet if the Timbrens will help my saggy rear end when I am towing a trailer, but others have said that this will be very helpful. This is my second major purchase from E-trailer -- I am impressed with their selection, service, and pricing. 92404


by: Rick S.08/20/2012

2010 Nissan Frontier with Timbren suspension components. Trailer is a Jayco X17Z with close to 450lbs of tongue weight. Pictures are a before and after view of the rear suspension droop. 52393


Since the Timbren install we have towed the camper on back roads with stop and go traffic as well as on the highway at 65 mph. The Pro4X does ride level and handles the added weight well. I wish I had a longer wheel base and a tandem axle trailer as on occasion we develop a slight up and down oscillation until the suspension settles down. It is noticeable when driving over long bridges. This is mainly due to the truck setup and not the Timbrens. We had this problem before the install and the Timbrens are making a difference.I have also hauled an estimated 780 lbs of hardwood flooring in the bed at 65mph and the truck handled it with no problem. It remained level and stable.

comment by: Rick S - 01/29/2013


You might be able to adjust the tongue weight of the trailer and get that oscillation to settle. You want your tongue weight to be about 10-15% of the trailer total weight. Also if the trailer does not ride level, looking into getting a different drop length ball mount that will get the trailer level or even slightly nose down.

Patrick B - 2/8/2013


by: Joe D.11/11/2013

I purchased this kit to keep my 2013 Toyota Tacoma Double Cab Short Bed from bottoming out when it has a load in the bed. It really did the trick as well as improved the stability with or without a load. The only down side is that the suspension is much more stiff without a load in the bed. It took some getting used to, but after having them on for a couple months, it doesn't bother me. 106946


by: Dennis O.01/18/2015

These spring stops seem like a heavy duty quality product. Very easy installation on my 13 Nissan Frontier by jacking up vehicle under shock mounts and removing tire, then clean area with compressed air and remove clamp nuts with air gun (if owned) remove old stops and install new stops and retighten nuts. I have about 1/2" to 3/4" clearance as advertised. Have not been able to haul anything yet but am sure they will help greatly. Also do one tire at a time (Safety) sorry no pictures. etrailer was quick to process and ship order. Great Business. Thanks etrailer Dennis O. 170343


by: ACS08/11/2014

I can't speak to ease of installation, I have a buddy with a car shop and it's just as easy to let him do it. As for ride with and without a load, this does what it says it will. Squat on my 2013 Nissan Frontier was greatly reduced when towing. There is a definite 'gallup' when you hit a small pot hole or bump in the road when under load, but it quickly fades away. I recommend these if you need occasional support but don't want to sacrifice unloaded ride. 145946


by: Steve W.10/07/2014

Everyone told me to use super springs to help handle the extra weight from my truck camper,so I bought them- What a WASTE of my money! A neighbor told me about your product, so I purchased a set - They are great! They work perfectly! My Nissan Frontier handled great. I love these things! Easy to install and they don't affect my ride or handling. 155075


by: Paul V08/16/2012

Product is excellent. From the time I took the parts out of the box until the time I lowered the truck of the jack it only took me 45 minutes to complete the installation. Easy to install with only a few basic tools. The truck no longer sways around corners. It may ride a little stiffer but barely noticible. Well worth the price. 51870


by: Jeremy01/30/2013

Found these very easy to install on my 2005 Tacoma. The back end was beginning to sag some from overloading so added a helper spring to give the Timbrens some clearance and these fit in as designed. With a loaded 16' equipment trailer, the truck rides level and smooth. 64558


by: David03/05/2013

Fairly easy to install. Haven't had a chance to try it out with a load yet but looking forward to it. Better than adding a leaf and raising it up and nothing to maintain like an air system would have. etrailer customer service is top of the line. 69032


by: Rob03/29/2012

2009 Tacoma, rear supports, easy install, jack it up, take off wheeel, remove 1 u bolt holding leaf spring and loosen the other, remove old bumper and slide in a new one, tighten & you're done. 35471


by: John W05/09/2013

Seems like a good product, haven't pulled trailer yet. But unloaded drives well. Tell people that they need a 5.5 mm allen wrench & impact wrench to make install smoother. 79630


by: Barry M09/16/2014

Great product. Allows me to pull my trailer without excessive suspension play. Works great. 151550


by: Jeff R08/08/2014

easy installed !! have not take pickup out and test it with enclosed trailer. 145388


by: Cesar12/02/2011

great product i installer on a 2005 Nissan Frontier works great 27534

- TDR1500DQ

by: Ron L.05/10/2013

Review from a similar Timbren Rear Suspension Enhancement System

Hello Patrick....I have attached the Timbren product to my 2012 Dodge Ram and am very impressed with the product. E-Trailer answered my question that I needed to know if the Timbren product would take the squat out of my truck when I hook up my 5th wheel rv. The proof is in the attached pictures I took to share with you and potential customers. Your customer service & product knowledge is outstanding and that is why I am a faithful customer. As far as the installation of the product, I could not find an easier thing to do....It's harder to change a light bulb! Of course your installation video was very informative which made things a lot easier. 79715


Helped make my decision a no brainer....thanks for the pics they sealed the deal.

comment by: James T - 06/14/2013


Fantastic....The truck drives like a dream! If and when I hit any potholes or bumps, of course you still feel them, but the control is there with no fish tailing. As far as pulling my 5th wheel, it feels like everything is one unit and floats right along!

Ron L - 05/10/2014


thanks Ron. Great information and you helped me with my decision.

comment by: Mike L - 12/28/2014



by: Carol s11/26/2014

Review from a similar Timbren Rear Suspension Enhancement System

i recently added a power lift to my 2002 mazda mpv to carry my husbands new power chair. i needed these to prevent the sagging that occurred when just the class III hitch was installed. we loaded the chair on the lift once and i knew we could not leave the sagging that way. i did not want the maintenance of air shocks, air bags or air springs so i ordered these and am very happy i did. it keeps everything level with the full load on the rear and does not affect the ride when loaded or empty (with just the hitch). i would recommend these if you just put people in the back of any van. Installation was very simple. jacked up van with floor jack i have with tire 1" off ground. i am not sure if my stock bumpers fell off or were stolen in the past but they were not there. i took off the one bolt (14mm), assembled the timbren ses with supplied long bolt (17mm) and left stock bumper mount on top (same orientation), used a deep socket (17mm) stuffed with a paper towel and short 3/8" extension and started the bolt by hand. then placed the 3/8" ratchet on and tightened it up. NOTE: I visited the hardware store before I started, with the assembled timbrens in hand. I bought two 7/16" washers and two 7/16" split lock-washers because it looked like the bolts would bottom out on the un-threaded portion before fully tightening them up. Sure enough, on the passenger side i had to add a 7/16" lock-washer to get it to snug up. There was alot of slack/play after the threads bottomed out on the un-threaded part of the bolt shaft. On the drivers side it did not need a lock-washer added. it tightend up without any play. I will check them periodically to see if they are coming loose. if so, I will place the lock-washer and the other flat washer I bought on both bolts, then assemble the rest and tighten up again with thread locker on the threads. The install went so fast if I had to take them down to add anything it would only be a few minutes for both sides. Nice stiff, controlled cornering without the roll. wish I added these years ago to make my minivan with the heart of a sports car even sportier. Thanks e-trailer, Carol S 162579


by: DaveInReno12/17/2013

Review from a similar Timbren Rear Suspension Enhancement System

Having purchased a cargo trailer, I thought it might be wise to beef-up the rear suspension on my 2000 Tacoma. I found the Timbrens on etrailer, and it sounded like they might work well, so I purchased a set and installed them. According to the instructions, there should be about a 1/2" gap between the top of the springs, and contact with the bottom of the Timbren - unless you have a CAP on the truck! The gap pretty much evaporated because of the fiberglass Leer cap. So, I'm getting contact a lot of the time. Result is, my ride has become stiffer than I'm used to, but not so much that it bothers me. Like my wife said, " It's a truck! Hello!!" (OK, I'm satisfied with the product.) 110248


Keep in mind that the gap Timbren refers will diminish as the springs wear. Since the truck is a 2000, it probably has some miles on it and if it has hauled heavy loads in the bed or has pulled a trailer, then the leaf springs may just be worn.

Patrick B - 12/18/2013


A year later and 5,304 miles pulling the trailer, I think the Timbrens are a good investment. With a typical pull of 2,555 lbs of trailer and load, and approximately 300 lbs of tongue weight, Im finding the truck actually rides better than it does with no load. And, theres no maintenance whatsoever!

DaveInSedroWoolley - 01/12/2015


- TDDR1002A

by: Harold B.05/21/2013

Review from a similar Timbren Rear Suspension Enhancement System

This Timbren SES kit is quite complete and seems like a great way to help the old springs in my '95 Dakota. My research shows the theory is correct anyway. I just finished the install and will have to give it a real test in a few days. I didn't even have to raise my truck as recommended in the instructions and was able to do it all laying in my driveway on my back. The install took much longer on the first unit as I could not get them to properly tighten up to the frame. Not being able to see directly what the issue was, it took me a little while to discover the Grade 5 bolts supplied were about 5/16" too long for my application. Fortunately I have a lathe and was able to machine them down rather than going to a big box store to buy replacement hardware, most likely of suspect quality. Someone else may not be so fortunate. The unthreaded shank portion of the stock bolts still needed two washers to be able to adequately tighten them through the frame and beefy plates on the SES. Once I got all of the bolts shortened and determined the correct amount of additional spacer washers needed (2), they went right together. I spent over an hour on the first side, but the second side was done in 15 minutes, as I expected. Perhaps my situation was unusual and I was accidentally supplied the wrong hardware. If the 1-1/2" long bolts are standard for this kit, the Dakota frames are too thin (about 1/8" or so) to to use this long of a bolt. A 1" bolt would be more appropriate for this application. 81456


by: Carlos07/16/2014

Review from a similar Timbren Rear Suspension Enhancement System

Put a set on my Dodge and now I have them on my Nissan. 141728


by: Tom W01/03/2013

Review from a similar Timbren Rear Suspension Enhancement System

I read the recommendation to another buyer and decided to try this product on my 2012 Ford F250 Superduty. I needed help for my 25' goose neck trailer. EASY to install. Worked perfectly with 15K of hay + 6K of trailer weight. The rear of the truck barely set down on the factory overload springs. Empty ride does not seem to be affected as the Timbren pads do not contact the overload stops. Thanks for a perfect solution without great cost and installation hassle! 62416


Still going strong even pulling a 38 foot fifth wheel toy hauler.

Tom W - 07/20/2014



by: Dave G09/12/2013

Review from a similar Timbren Rear Suspension Enhancement System

I was pleasantly surprised to find the installation procedure to be even simpler than the instructions sent with the "Timbrens". So easy even a cave man could do it. Same with the mirror extensions, very simple to install. I can't provide useful feedback (or a meaningful rating) regarding how well these products work. I haven't had a chance to use either the timbren system or the mirrors. My first trip with the trailer will be late September. I'll let you know when I get back....thanks. Dave G 99667


Unfortunately, I ended up returning the timbrens and replaced them with the Firestone Air Shocks. The Timbrens worked fine when hauling the trailer. However, without a load on the truck, the timbrens prevented the shock absorbers from engaging when needed and the resulting ride was very uncomfortable. The air shocks are the way to go if you only need the extra suspension on occasion. Thanks. dg

Dave G - 09/12/2014



by: LAW10/24/2013

Review from a similar Timbren Rear Suspension Enhancement System

Received the product promptly arriving yesterday. Was a little hesitant to take off the u-bolts on the axle but they came off with no problem and went back on easily. It made installation easier by removing the wheel on each side as I was installing them. The Tacoma will now hold a good load without the sag. Have had previous experience with this product with very good results. The truck now has no dip or sway when driving on rough road. Very good product for a firm and stable ride. 105069


The product is still working very well. The Timbrens give a very stiff ride when the bed is not loaded, actually a rough ride. When the bed is loaded or pulling a trailer is where the value is most notable. On the Tacoma, the frame rests on the Timbrens even before a load is applied. I dont mind the rough ride so they have worked out very well for me.

LAW - 10/26/2014


- TDR1500DQ

by: Jerry H07/03/2013

Review from a similar Timbren Rear Suspension Enhancement System

These are the second set of Timbren SES I have purchased, the first being for a 2006 Nissan Titan and these for a 2013 Dodge Ram. Both were purchased in order to pull a fifth wheel camper and minimize the "squatting " issue. I am very pleased with the result. Installation on the Dodge was literally a 5 minute breeze as there are no nuts and bolts to remove. Just popped out the old ones and pushed these into place. Lowering the fifth wheel onto the bed secured them into place. The ride is impacted slightly when not pulling the camper, but as these install so easily, I will be able to put the OEM parts back into place with ease when not towing to soften the ride. I highly recommend for anyone pulling heavy loads. 87257


Patrick, Im still using the suspensions with and without towing. They work just as they are designed to. Very happy with them.

Jerry H - 07/10/2014



by: Racer Bruce07/08/2012

Review from a similar Timbren Rear Suspension Enhancement System

I ordered these on July 4th (Wed) and received them on Friday. As always I got very fast shipping from I installed these today on my 2009 Sierra 1500. I pull a 20ft enclosed trailer all around the mid-west and up and down the East cost. I've continually been adding things to the trailer so lately the rear of the truck has started to sag a bit when towing. This product seemed like a reasonable way to help remove the sag. I measured the truck in a couple of places near the back with the trailer hooked up prior to installation. After installation the sag was reduced by an inch to inch and a half which is what I was looking for. The truck is now very level with trailer attached. Installation was very easy as the mounting point is easy to get to. I did one side at a time by jacking up that side and removing the tire/wheel. I probably could have done it without removing the wheel, but this just made it that much easier. Remove one 10mm bolt on the original bump stop and then bolt on the new part. Tighten and you're done (well, I had to put the wheel back on, etc.) I did the whole thing in about 40 minutes. I haven't pulled the trailer yet with these installed, but I've already gotten the primary result out of the purchase which is to remove the sag in the truck when the trailer is attached. 47122


by: Thomas T.12/09/2013

Review from a similar Timbren Rear Suspension Enhancement System

Purchased for a 2008 5.7 l Toyota Tundra. As advertised. Installed in one hour. Performed as described with an unload bed- slightly stiffer with less recoil over rough roads. Hitched the fifth wheel to the Tundra and took a one hour trip over varying road conditions. Performed exactly as I hoped. Couldn't be happier. ETrailer processed the order on the same day and I received it on the afternoon of the third day. Could not be more pleased. 109677


Thank you for your follow up inquire on the Timbren suspension parts for my 2008 Tundra. I used the vehicle for the past year to tow a Heartland fifth wheel. The parts worked as advertised and I have been happy up til I sold the Tundra. The service I received at Etrailer led me to purchase towing base plate and bar for my dinghy on our next RV. Its a pleasure dealing with Etrailer!

Thomas T - 12/12/2014



by: Bill J.09/12/2012

Review from a similar Timbren Rear Suspension Enhancement System

While these seemed a bit pricey for just "rubber bumpers", these "rubber bumpers" did deliver as a great suspension enhancement and were well worth the money. They installed very easily (just like the video) on my Dodge Grand Caravan. (The only thing I did different was to remove the lower bolt on the shock since it was much easier to get to than the top bolt.) They also performed excellent. With no load or a light load the van drives and feels normal (i.e. no adverse effects) and with a medium-large pop-up trailer the back end of the van sagged very little and it drove very stable. It sagged much less and drove more stable than the OEM parts with lesser loads! My experience is based on driving 3800 miles pulling a pop-up and the family to Yellowstone. Great product, service, and shipping speed from etrailer. 54505


hi, when removing the old bump stops, the basically just pulled off, leaving some foamy glue behind on the mounting plate... put the mounting plate has no bolts or fasteners to remove it, so I cant get anything on there, and my old bump stop is wrecked... Can you help me understand how to install these rubber springs?I have a 2000 dodge grand caravan

comment by: Donovan - 08/13/2014



by: Gerry A07/22/2013

Review from a similar Timbren Rear Suspension Enhancement System

Installed this on my family's 2010 Town & Country. I was considering installing load-leveling shocks, but opted for these instead. I rather the weight of a trailer/cargo carrier be on the axle then the shock supports. Installation was simple and straightforward. Like others, I opted to disconnect the shock at the bottom mount than the top. It took me about 30 minutes per side, excluding tire removal and jacking up the vehicle. Suggestion... use a hydrolic jack to lift the axle a bit if you have a tough time getting the bolt connecting the shock to the mount. Do the same to reinsert the bolt when reassembling. The jury is still out on performance, however, I'm sure it will do fine based on other reviews. I attached some before and after pics. 90865


by: Focuspuller08/11/2011

Review from a similar Timbren Rear Suspension Enhancement System

Overpriced.... A little slow in time to ship out from etrailer. The product does work as stated. Our 2008 Chrysler Town and Country with 20,000 miles blew both rear self adjusting shocks. We do not carry heavy loads or more than 3 people. Luckily we were still under warranty, otherwise it would have cost $300.00 per shock (parts only). In researching the shocks for the van I came across several articles on the Timbren Suspension Enhancement System. They look like what I needed to keep the shocks from going again. The price seemed high for two small rubber cylinders....but with the money back guarantee I gave it a shot. I installed them yesterday, the video was a little help, but not enough detail on how to remove and tighten the upper bolt on the shock absorber. The ride and handling of the van has improved greatly. No lean on turns and bumps are roll side to side. I recommend these for anyone with this van, even if you don't carry heavy loads, the ride improvement alone is worth the install, (easy for a novice to do). I would have given excellent if it weren't for the high cost. 21592


by: markbo11/21/2014

Review from a similar Timbren Rear Suspension Enhancement System

I initially ordered the wrong part, # TTORTUN4L. after realizing that I needed part, "TORTUN4" I gave them a call and the change was made before shipping, and with no problems. Very professional staff and easy to deal with. The product arrived in a timely manner and as advertised. It took me about 15 minutes to install (without removing the tires). I just crawled under my 2007 Toyota Tacoma pre runner, removed only one U-Bolt , slid one end of the Timbren under the other U-Bolt and placed the U-Bolt I removed back in place over the other side of the timbren and tightened. Repeated on other side. Due to having a fiberglass camper top on the bed and custom built storage inside of the bed the timbrens just barely hit the top bracket. therefore, the ride changed slightly, but not as bad as I thought. The springs do help significantly with body roll when making sharp turns. Overall I am extremely pleased with them. Haven't had a chance to tow with them yet, but can tell by the stiffness that there will be no problem with sagging. Thanks for the great product a helpful staff. Mark 162116


by: Dave O.05/05/2013

Review from a similar Timbren Rear Suspension Enhancement System

I received this order quickly. I installed them without any problems and they do offer additional support as shown in etrailer's website. Seems like a good product so far. 79045


The product has worked as described on the website. They have been excellent as a suspension enhancement. My Durango used to squat 3 and one half inches before installation of the Timbren support. Now when hooking up my boat my Durango goes down 2 inches and stops. I have great support and better control of my vehicle especially when fully loaded on a family vacation. Great product.

Dave O - 05/05/2014


- TDVR05096

by: Sean Z11/06/2010

Review from a similar Timbren Rear Suspension Enhancement System

Best available for Kia I wish I would have known about this product sooner. I have a Kia Sedona and there are only 2 suspension aids available. I previously had the Firestone airbags and don't recommend. The bags and compression fittings leak and installations complicated. This was the only other option so I gave it a try. Very glad I did. They do exactly what they say they do. The Sedona doesn't dip nearly as much when I put the trailer on. In fact I had to go to my lower rise hitch so it would sit flat. Ride is solid, but not jarring. I don't really know about the reliability as I've only had them about a week, but it's a very simple concept so I can't imagine problems. They are basically oversized flexible bump stops and have no moving pieces. They seem expensive for what they are, BUT installation is MUCH cheaper than the airbags. It cost me just a bit over a hundred bucks to have them installed at a local service chain (Tuffy). They also are very discrete so your warranty likely won't be called into question. 3579


by: Louis N.08/28/2013

Review from a similar Timbren Rear Suspension Enhancement System

I ordered the Timbren Suspension Enhancement Kit on Monday and received it on Wednesday with the standard shipping. (Free on orders over $150.00). This is the third order from and every order has been expedited quickly and received before date quoted. All my orders have been correct and good quality. I installed the Aeon Rubber springs on my 2013 F-250 4x4 Diesel in about 20 minutes just like the video showed. With my truck bed loaded with supplies and bumper hitch trailer hooked up, my truck bed is just a hair below level; before it squatted a couple of inches. The road test will be tomorrow. 97375


by: TomS10/04/2013

Review from a similar Timbren Rear Suspension Enhancement System

Easy to install. Once placed the order I sprayed the nuts in the old ones with rust bister. When the new one arrived the old one can off with no problem and the new ones went on just as easy. Delivery was on time as promised. I have not hooked up the travel trailer yet but am positive these will correct my sag problem. Install time approx. 40 minutes. 102598


After a year the product is still working great. I have had no problems with the product and it does the job that I wanted it to do. Great product.

TomS - 10/04/2014



by: Stan C.06/09/2012

Review from a similar Timbren Rear Suspension Enhancement System

ETrailer, as usual, delivered promptly at a very fair price. The installation video made it possible for me to do the job. As usual, Dodge's design made the job a bit more difficult than expected. The shock absorber takes an 18mm socket and most socket sets skip that size. My 3/4" socket was just a bit to big to do the job without damaging the bolt head. Watch out for the brake lines that run next to the nut on the back side of the shock absorber bolt. lt took two of us to spring the axle down far enough to get the coil spring out. Alone, I could swing the axle down or move the coiled spring, but not both. I had to use a screwdriver to lever the OEM spring bumper out of it's mounting but the Timbren unit slipped into the mounting socket smoothly and with two of us, the spring went back in place easily. It took us double the expected time to do the job but we did it without a lift or the nice air tools a pro would have used. Now the test will be to haul a loaded trailer. 43491

- TDR2500CA

by: Jim W10/07/2014

Review from a similar Timbren Rear Suspension Enhancement System

Bought these as a way of reducing the 3" sag I get when dropping the 3000lb 5th wheel hitch in the back of my 2012 Ram 3500 SRW 2WD Fairly simple job to fit. I am a tall skinny guy so did not need to jack up the truck. Bump stops came off easy. The slots in the Timbren brackets could do with being 1/4" longer, I had the brackets as far forward as they would go and the Timbrens are only just central over the axle. The bolts at the rear of the bracket (the open sloted end) are tricky to get at (need a closed or open ended wrench) and if you have a 5th wheel hitch mounted to the frame close by (like I did) then you have even less room. Tip: Put the rear mounting bolts in first and slide the Timbren bracket in, that way you only have to cinch the bolt up. Did not need the spacer and have about 3/4" clearance unloaded and do not notice any change in the ride unloaded. Have not yet hooked up the trailer so can't yet comment on how much the sag is reduced. 155106

- TFRTT1502D

by: Timothy03/27/2013

Review from a similar Timbren Rear Suspension Enhancement System

Great product, ordered these for my F-150 and was upgraded to express shipping. Received product in 4 days and took me a total of 20 minutes to install on both sides. Truck does not squat at all when it comes in contact with the springs now. Still have the smooth ride when not towing, towed my trailer with 4800lbs with no problem. Thanks for a great product. 72885


Still working the same as new. Towed 6500 lbs. and truck set normal. Still a great product. Thanks again!

- 04/12/2014



by: Brad04/16/2013

Review from a similar Timbren Rear Suspension Enhancement System

Here are some pics. I installed the timbren could in about 20 minutes and put them to work the very next day pulling my LE3505 Weekend Warrior Fifth wheel. My 2012 F250 power strike was sagging horribly before purchasing these coils. The coils make the truck perform like a one ton & rides wonderful! Thanks for the opportunity to not have to install Air Bags!! 76339

- TFR1504D

by: Paul Y12/12/2013

Review from a similar Timbren Rear Suspension Enhancement System

this is a super product. This is my 2nd set of Timbren "overload springs". my first set was on my 2002 trailblazer and this set is on my 2010 Ford F150. In both cases, it has kept my vehicle perfectly level (I measured) when I loaded up with lumber, cement, sand, or any other heavy cargo. it works just as advertised. this time I loaded it up with 500 pounds of water softener salt to give me some traction through the winter. It works a lot better than Sam because I can use it up throughout the year. 10 years ago, the installation on my trailblazer was a little difficult. This time on my F150, it was a piece of cake. However, I tried for an hour to install one without removing the wheels and couldn't do it. So I got out the floor jack and jack stands (yes, I'm a little lazy at 67), pulled the 2 back wheels, and it took 20 minutes total, including pulling the wheels and putting them back on. great product and good service from 109970


by: Ronald02/22/2013

Review from a similar Timbren Rear Suspension Enhancement System

Super Fast shipping. Ordered on Monday( a holiday) and reviewed Tuesday afternoon. Very easy install. Thank you. 67446


by: Ron O07/13/2013

Review from a similar Timbren Rear Suspension Enhancement System

They were very easy to install on my 2010 town and country just watch the video on the site. Cornering seems to better and bumpy roads don't feel as bumpy. I bought these for when I pull my pop up camper. I will post again after my trip to ocean city Maryland in august 89400


They still work great I pull my 2 3 seater jet skis with my van to Canada they work very good the van is loaded to the gills to

Ron O - 01/11/2015



by: Tom H.09/15/2012

Review from a similar Timbren Rear Suspension Enhancement System

Tough to decide, Timbrens or air suspension. I opted for Timbens in part because of price, but also no maintenance, while knowing there might be a trade-off in fine tuning the ride. I installed the Timbrens on an '09 Silverado C1500 crewcab, pulling a '13 Springdale 247FWRLLS. Last measured pin weight was 1,120 lbs. Install time was 14 minutes, clock started after purchasing and cutting a piece of 4x4 to help jack up the frame, allowing access to the space. Before Timbrens, 2" drop in bed height after hitching 5th wheel. After Timbren install, 1" drop. Ride unhitched is mostly unchanged, the bigger bumps transmit a more firm feel as the Timbrens connect though. When hitched to the 5th wheel, overall smoother, more confident ride. I'm happy with the purchase. Thank you for the fast and dependable service you are known for! Tom Round Rock, TX 54799

- TDR2500CA

by: Karl G.01/07/2013

Review from a similar Timbren Rear Suspension Enhancement System

I ordered a pair of rear axle Timbrens for my new Ram 2500 as I plan to buy a 5th wheel and tour the US in my retirement. To me, the Timbrens are preferable to adding air bags or beefing up my leaf springs or shocks since they only "work" when you are loaded allowing you to keep your normal unloaded ride quality when not towing. e trailer's price, service and follow-up was great and I had the Timbrens installed and ready to roll 30 minutes after delivery. 62568


by: Stefan S04/29/2012

Review from a similar Timbren Rear Suspension Enhancement System

This product is an absolute must have if you plan on towing anything other than a lawn and garden trailer. I recently moved from DC to Tampa, FL by way of a two week stopover in MS. I towed my 5x10 trailer loaded down with 2 dirt bikes, 1 CRF50, misc other stuff as well as a van load of kids, dogs, and some other belongings. This product completely eliminated all swag and there wasn't one hint of trailer sway. Most importantly, the ride was fantastic with no bouncing or any other ridiculous behavior. These things even smoothed out that section of 59 that runs from north GA down into MS. I know they are pricey but please do yourself a favor and buy this product for yourself, especially if you're going to be towing with family in the van. Their saftey could dempend on it. 38780


by: Ken R06/21/2014

Review from a similar Timbren Rear Suspension Enhancement System

This was very easy to install. It does require removing the wheel to install them but that is the most difficult part of the install so it's a 1 banana job. As far as function they work as advertised. I used these to tow a 5500 lb trailer. Also had a Thule box on top of the Sequoia and 4 passengers. There was a little sag (rear lower than the front) while towing but not bad maybe an inch or less. Going over bumps felt controlled with no harshness. I have used air bags on other vehicles. Although they allow more control of the ride height I don't like having to spend several hundred for an in cab controller or fiddling with adjusting the air frequently. These are a good compromise for me and did a fine job. 136899

- TDR1500DQ

by: Justin09/10/2013

Review from a similar Timbren Rear Suspension Enhancement System

They work as advertised and significantly help my truck from squatting when pulling my camper and fourwheeler together. When I talked with Timbren directly they stated these are the 8600 lb model. They don't actually make a 6000 lb model for my 2013 quad cab. After installation on my stock pickup the springs were almost two inches away from the axle. I talked with timbren and they helped me get the spacer I needed free of charge. Overall both companies have been great to work with and the product works as advertised. I haven't noticed any change in ride quality when unloaded unless I hit a big bump pretty hard than it is a little bit more stiff, nothing I would care enough to complain about though. 99307


by: Kevin R.07/09/2012

Review from a similar Timbren Rear Suspension Enhancement System

I put these on a Z71 1/2 ton truck. I found a gooseneck horse trailer with living qaurters 33' long total and when the dealer hooked it to my in bed hitch the truck dropped about six inches told too much trailer for my truck they suggested air bags never heard of timbren I installed the timbrens went back to dealer this time test pulled you would think its a 3/4 ton truck now only 3" sag bought trailer pulled it home thanks timbren! great product saved me from bying a different truck dealer thinks it will start selling these! 47330


Thanks for the info Kevin. I just purchased a 3 horse slant gooseneck and my Ford F150 squats a bit. Think these will solve my issue. Thanks for helping me make up my mind!!

comment by: Mike B - 08/07/2014



by: Joe L06/08/2012

Review from a similar Timbren Rear Suspension Enhancement System

I put these on a 2004 Suburban K1500 because I use it to pull a JD 990 on a 16' trailer. I also use it to pull a 23' boat. The originals were still on the truck and had definitely exceeded their life expectancy and the rear end was obviously sagging. I replaced the P series tires with LT E rated at the same time and there is a substantial improvement in the stance and handling when a trailer is attached. I recommend these to anyone towing anything with a tongue weight of >500 lbs. Be sure you don't exceed your hitches rating! A tip for the install: put liquid soap (I used laundry detergent) around the collar and it will slide right in when you lower it down on the 2x4. 43401


by: Bryan Hanselman04/30/2013

Review from a similar Timbren Rear Suspension Enhancement System

Etrailer expedited the package early due to returning customer. Parts delivered in double packaged boxes. Installed in 1/2 hour after fighting the old rusty bolts. Have not had a chance to load test yet. Will give another follow-up review after truck and trailer are loaded. 78488

- TDR2500CA

by: Randy03/11/2013

Review from a similar Timbren Rear Suspension Enhancement System

I had watched the installation video so that i would have a idea how they went on well I was supprised I didnt have to raise the truck at all just went under removed bump stops found out that I didnt need the spacer bolted them up to the truck and was finshed in about a half hour. havent hauled anything yet or hooked up to camp trailer so dont know just how they will work but have read good reviews on camp trailer fourms so thought I would give them a try. 69956


by: James B09/26/2014

Review from a similar Timbren Rear Suspension Enhancement System

We have installed 3 sets of the Timbren rear suspension enhancement systems on 3 different fleet truck and they have all installed and worked great. We have them on 2 half-ton trucks 2014 Dodge and Chevy. Also on a 2012 Chevy 2500 crew cab with a big service box. Install took less then 20 minutes each and have helped when hauling trailers and fully loaded. As for Etrailer they have been great to work with, one of our orders was shipped from the Factory wrong, called Etrailer talked with Suzanne and had it fixed and the proper ones to me in 2 days. Bottom line, great service and great product. We will be installing on all our 3/4 tons next. 153202

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Ask the Experts about this Timbren Vehicle Suspension
Do you have a question about this Vehicle Suspension?

  • Installation Instructions for Timbren Suspension System on a 2012 Nissan Frontier Pro4X 4x4 Off Road
  • To install the Timbren Rear Suspension Enhancement System, # TTORTUN4L, on your 2012 Nissan Frontier Pro4x 4x4 you will need to safely raise the vehicle to allow the axle to hang freely, then loosen the axle u-bolts and remove the OEM rubber bump stop. Next, install the lower bracket from the Timbren kit where the OEM bump stop was. Finally, tighten the U-bolts and safely lower the vehicle. I have attached installation instructions for you to review.
    view full answer...

  • Overall Height of Timbren Suspension Enhancement Springs # TTORTUN4 for a 2010 Toyota Tacoma
  • I went out to the warehouse and actually pulled 2 possible fits for your 2010 Toyota Tacoma. First, for Timbren springs # TTORTUN4, the overall height from the bottom of the bracket to the top of the spring is approximately 5 inches. The other kit I pulled was # TTORTUN4L. This kit is a bit shorter at 4-1/2 to 4-5/8 inches tall overall. I have included links to hte isntructions for both kits as well as a link to our FAQ article on Timbren systems for you.
    view full answer...

  • What Is the Installation Like for Timbren Springs on a Toyota Tacoma
  • The install for the Timbren Rubber Enhancement Springs, part # TTORTUN4L, is fairly easy, just one bolt and nut to install the spring and bracket. It bolts in the same location as the factory bump stop. You will just need to jack under the frame of the truck to relieve the tension on the suspension. Remove the bump stop, 1 bolt and nut, and finally install the Timbren spring again with 1 nut and bolt. Repeat on the other side. I have included a link to the directions. I have added links...
    view full answer...

  • Using a Weight Distribution System to Level a 2006 Toyota Tacoma and Cargo Trailer
  • The best way to reduce sag at the rear of a vehicle when towing a trailer is to use weight distribution. I recommend a system that has built-in dual cam sway control to prevent trailer sway before it starts. For the right sized system, you will need to know the tongue weight and gross trailer weight of the trailer when it is fully loaded and ready to tow. For example, if the tongue weight of the trailer is 400 pounds, you would need a system with a 200 to 600 pound tongue weight capacity....
    view full answer...

  • Will Timbren Rear Suspension Enhancement Fit 2010 Toyota Tacoma 4X4 Quad Cab Short Bed SR5 PickUp
  • My technical contact at Timbren confirmed that the Timbren Suspension Enhancement # TTORTUN4 that you referenced will work well on your 2010 Toyota Tacoma because you previously added that fourth leaf spring. The difference between the # TTORTUN4 and the # TTORTUN4L which is designed for vehicles with three leaf springs is 1/2 inch so because you added the extra leaf you can use the original part you picked out. I have attached a FAQ article covering Timbren as well as the installation...
    view full answer...

  • Will SuperSprings Eliminate Axle Wrap On 2013 Nissan Frontier
  • With that few miles you have on your 2013 Nissan Frontier, it sounds like the suspension is the problem and I recommend you take it back to the dealer and have them check the entire system out before investing in suspension enhancements. I spoke with my contact at SuperSprings about the axle wrap. They told me that installing SuperSprings like part # SSA1MTKT, will help a bit with the axle wrap, but will not eliminate it altogether. According to the installation instructions, the...
    view full answer...

  • Suspension Enhancement for a 2010 Toyota Tacoma 4x4
  • Heavier springs are going to create a stiffer ride all the time and not just when there is a load in the truck. Adding Timbren springs to your 2010 Toyota Tacoma will pretty much keep the unloaded ride the same and then offer support and improve the ride when under load. Timbren springs # TTORTUN4L would be the way to go. If you need to level the bed side to side as well because you carry different loads all the time, air bags may work better for you. You could use Firestone Ride-Rite...
    view full answer...

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Toyota Tacoma Accessories

Info for this part was:

Photos by:
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Installed by:
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