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Timbren/
Jounce-Style Springs/
Standard Duty/
Rear Axle Suspension Enhancement/
Occasional Towing and HaulingItem # TTORTUN4
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Our Price: $214.67
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6,000-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.
Features:
Specs:
Whether you're hauling heavy loads in your bed or cargo area or towing a trailer, you will often see the rear of your vehicle sag while the front end rises. In these cases, the rear axle is handling not only the weight of the cargo, but also more of the vehicle's weight. Because less weight is on the front axle, the front tires are making less contact with the road. Overall handling - traction, steering, and braking - is negatively affected. But the resistance from Timbren's Suspension Enhancement System works with your factory suspension to keep your vehicle level and improve your driving experience.
The Timbren system comes with custom-fit brackets that are bolted onto each frame rail above your rear axle. Hollow rubber springs are bolted to the bottom of the bracket and hang down to where the bottom of the leaf spring sits, 1" 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 that you are used to.
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 increases resistance, stiffening the suspension and keeping your vehicle level.
Each hollow rubber spring works independently to support the driver's-side or passenger's-side of your vehicle. 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 you are hauling off-center loads.
Because your vehicle handles better with the springs, less turbulence will be passed along to the trailer and this helps 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 a passing semi) because the movement from the trailer is not transferred to your vehicle. This also works to make the sway subside more quickly.
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 because the rubber springs work to prevent bottoming out on rough roads.
Timbren's Suspension Enhancement Systems are much easier to install than air springs - there are no air hoses to run, no compressors or gauges to hook up, and no manual adjustments to make. The rubber construction makes Timbren's springs more elastic than similar products constructed of microcellular urethane. And more elasticity allows for a more comfortable ride because the rubber has more travel.
Installation Details 
2016 - 2019 Toyota Tacoma
2004 - 2015 Nissan Titan
2000 - 2019 Toyota Tundra
2005 - 2015 Toyota Tacoma excluding Pre-Runner
2005 - 2015 Toyota Tacoma Pre-Runner
Video of Timbren Rear Suspension Enhancement System
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Speaker 1: Today we're going to be taking a look at the Timbren line of suspension enhancement systems. Any time that we add weight to our vehicle, it's going to put a lot of strain and stress on the suspension, especially if we're towing a heavy camper, trailer, or we have a heavy load in the back.Tends to have the back end squat down, which again, it's going to put that strain and stress on the rear suspension because not only are we asking it to hold up the weight of the vehicle, but everything else that we add on to it. Which that can arise a lot of different issues. The front end is going to be getting pulled off, which will misalign our headlights, and our tires won't have as much contact, so our steering and braking is going to be diminished.But tat;s where timbrens are going to come into play. They're going to provide us that extra support so that when we do have those heavy loads, the back end doesn't sag down quite as much, and it's not putting so much stress on the back end. By doing that, the front end's not going to rise up, which means our headlights will be in line and our tires will have the correct amount of contact and pressure, so our braking and steering isn't affected.
And they're going to do that all while making our ride more comfortable with that extra load.Our timbrens are going to provide us the support we need by replacing our factory jump stops and mounting in between the frame and the axle. Now, yours may look different, so you want to double check inaudible 00:01:20 fit guide for your specific application.Now, each one of our timbrens is going to feature a steel bracket. They're all going to have black, powder coat finish on them to resist that rust and corrosion or any other kind of chemicals that may be on the road. They're going to have a hollow, rubber ayon 00:01:36 spring that's going to take a lot of that pressure and strain off of the rear suspension.Whenever we do load our vehicle down, the space between our frame and our axle is going to get smaller. That's where our spring is going to make contact with the axle, and it's going to start compressing.
Now, they are progressively rated, so if we have a small load or a light load, it's going to have a little soft engagement. But the further it gets compressed, the harder and stiffer it becomes, giving us the support we need with those heavy loads.And since they are rubber, they're going to have a lot of give to them, which means they're going to give us the support we need. But at the same time, they're going to give us some more cushion and absorb some of the road shock as we drive. And since the rear ones here aren't in constant contact with our aXle, it is going to provide us the same ride quality when it's unloaded.Our timbrens are going to work independently from each other from side to side. That way, if we have an off center load, it will help compensate for that, but at the same time, if we take an evasive maneuver or a really sharp turn, this is going to help reduce that body roll and some of that sway feeling that we get going on when we have a lot of added weight.Our timbrens for the rear are going to be a good enhancement for any time you're going to be adding weight to the back of your vehicle, whether it be a heavy trailer, a large load in the back or any other situation where you're adding a lot of weight to the back of your vehicle.Now, timbrens on the front are going to be a little bit different.
They're going to provide us that load-leveling support and make sure the front end doesn't get pushed down too far. However, these typically are going to be in contact all the time, which means it's going to give us that support and help reduce on that body roll all the time, all while absorbing that road shock, giving us a smoother ride.Now, some situations where you'd want that extra support on the front of the vehicle to keep it from getting pushed down too much would be if you have a snow plow or winch, if you flat-tow your vehicle, or if you have any other heavy accessory on the front. This is going to make sure that front end stays where it should be, and again, making sure our tires, braking and steering acts how they should.When comparing the timbrens to other suspension enhancement options like airbags, these are going to be a lot easier to install because we're not going to have to worry about running lines, maintaining air pressure, putting in switches or compressors or any of that. Once these are installed, these are going to be completely maintenance free. However, airbags are going to provide us with a lot more adjustability, whereas our timbrens are not going to have that.That'll finish up your look at the timbrens suspension enhancement systems..
Average Customer Rating: 4.7 out of 5 stars (1654 Customer Reviews)
6,000-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.I received your product today it was very easy to install took me about 30 minutes. This product works fantastic. This is my second time buying this product installed on my new truck works fantastic would buy it again. Love your website and on the products that you have: thank you 550017
Installed these on 7/6/2018. Install was pretty strait forward. Sure made a difference on the ride height. It is one of our service vehicles that we have, so we shall see if the driver of it notices the difference. 539447
Very easy to install with great instructions and video support right on the website. They took me 30 minutes to install and you do not have to remove tires. Just remove the U Bolts and put them on. Very easy and all needed parts are in the box! 403762
Works like a charm! Installed in 15 minutes. Had them for a year now on my 2013 Tundra 4x4 double cab. Helps to level out the sag from the travel trailer load (although not perfect and leveling is not entirely their purpose - airbags for that if you want) and keeps the up/down undulations to a minimum on the road. Recommend them fully! 258206
Came on time easy to install and works like a charm. 406228
great! no worries as long as your truck can handle the haul load makes for a rougher ride. But dont abuse them.
Beverly B - 07/15/2018Seems like a very good product, although it does stiffen the ride noticeably. It did cure the rear end sag due to my shell, lumber rack, and tools inside. Instructions were vague, but I still managed to install both in about 45 minutes. 108743
Very easy to install. Works great. Didn’t seem to affect my ride. Levels up my rig when I put the camper on or hook up to a trailer or piece of equipment. Love it and would highly recommend it. 570299
Timbren suspension systems wont have a whole lot of effect on vehicle ride except during cornering or when the vehicle is under load. Once a load is applied to the suspension, either from cargo or from the tongue or pin weight of a trailer, the suspension will compress enough for the Timbren Aeon springs to contact the axle.
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Mike L - 10/01/2018Excellent product, easy bolt on application any DIYer could install. Ride height has improved considerably while towing my trailer or hauling my tools and equipment in my truck bed, no more sagging rear springs and swaying or front end drift. 418758
The best investment, cost and performance bang for your buck that really improves the ride, I love it and would give it a 10 star rating if there ever is one.
Martin A - 08/11/2018I bought these as a replacement for "air bags" which I had two different sets, which failed over 10 years. i would say this product is helpful with pulling a trailer and lighter loads but from time to time I haul heavier loads and this product doesn't offer as much help/support as the air bags. This product is a little cheaper and if they don't weaken over time they will be a help. I have added additional leaf springs to two different pickups but then you end up with a stiffer ride full time. 421383
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
I'd have to give them a good to excellent review. I'm pulling a 5,000 pound trailer with 500 pounds of tongue weight and a light load in the bed of my Tacoma. It's a stiff ride with the trailer on, but had to have something to keep the truck level, and this is probably the least expensive way to go. With an empty truck, I have to hit a very hard bump for the frame to hit the Timbren, thus the ride is the same as it was before I put them on. 243664
Super easy to install. After reading several reviews about this product and how folks went about installing, found that I just needed to remove just one of the U-Bolts and just barely loosened the second. Replaced both in about 30 minutes. Shipping was quick and was exactly what I ordered. Reviews were helpful and will definitely use etrailer again. 528948
20 min install tops. Took more time retorquing the nuts after loading. Couple tips: only remove the two rear nuts on each u bolt to slip out the old bump stop to replace with the timbren. Go ahead and spray those nuts with pb blaster or wd 40 to help ease removal. I used a breaker bar so it was no problem. I would suggest that once you have the timbrens in place, I would jack up the rear under the receiver hitch (I used wood blocks) and slip your socket and extension back into the bump stop to retorque the 17mm bolt. I also went ahead and retorqed the nuts once I hooked up trailer. As far as towing now, wow what a difference. Virtually eliminated all front axle hop from road dips making for a much more confident and stable ride. 26' coach, 4900# dry. Pics are unloaded and then loaded. 270693
Great product and very easy to install. I haven’t loaded the truck yet but I’m sure it will do just fine. Here’s a before and after, total install time 30 minutes. 484482
I just wanted you to know that prior to my installation, this Coachman with a hitch weight of 700+ pounds would push the rear down so much that there was barely daylight between the tire and the wheel well...but look at us now. This '04 Titan with 189,000 miles and original suspension is riding high. Your product helped me get the bed level and has reduced the sway on the trailer so much that it is hardly noticeable. I am very happy with my purchase, your follow-up and the results. 564348
Just finished installing the TTORTUN4 Suspension kit on my Tundra. It took me, with limited mechanical ability, about an hour to install and was a simple and easy installation. My truck loaded with tools, a construction canopy, and heavy bed-slide sits up in the back like its unloaded, rides great, and handles so much better! I'm super pleased! Thanks so much! 340924
I purchased this item to install on a 2013 Toyota Tundra 5.7L V8, 4x4. It took about a week for the product to arrive. Once I received it, I took an 18V Battery Operated Impact Wrench and removed the U-bolts from the Springs, removed the OEM Bumper mounts. Installed the Timbrens, retightened the U-bolts and torqued the bolts to factory specs. Total time to do the install, 30 minutes! Also, I want to mention that I never jacked up the truck. The ride quality is the same when the vehicle is unloaded. When I hook up to the Travel Trailer, the truck doesn't squat like it use to and I don't get the bottoming out or rocking effect when I hit a waving section of pavement when pulling the TT. I'm very happy with my purchase. 181778
Hey guys, I'm 76 and I installed these in 30 minutes. Took longer to get the tools together and get under the truck than to remove old bumps tops and install new ones. Thanks etrailer 546853
Quick friendly service. Easy install, hardest part was getting a good picture ! 508427
Bought these for my new 2018 Toyota Tundra. On my previous 2010 Tundra, I had installed helper springs and decided to try Timbren's this time around. I bought 1/2" spacers, since I did not want the truck to sag too much. Not sure if you can see in the pictures, but with the 1/2" spacers, the Timbren's come into contact approximately 1/2" to 3/4". They can be a bit rough and bouncy once they come into contact, but no rougher or uncomfortable than with helper springs. Over all I am very happy with how they perform. The installation was very easy. Took me about 1/2 to 3/4 of an hour. All you need is a 24" breaker bar, a ratchet wrench, and a 19mm deep socket. Unloosen the nuts enough to remove the existing bump stop and replace with the Timbren's. That's all it takes! 451415
This is my 3rd purchase of the Timbren rubber springs for the rear of a vehicle I use near (and sometimes beyond) mfg load/tow capacity. The 1st was a Honda Odyssey, the 2nd was a Dodge 3500 diesel dually pulling a 44' gooseneck and the current is a Toyota Tundra. I put about a decade on the first two installations and a year so far with the Tundra. In each case the improvement to the vehicle's stability and safety under load was night and day. I won't even consider having a vehicle used for towing without them. They are transparent (don't engage) without loads, last the useful life of the vehicle, maintenance free and very inexpensive relative to the value received. 241546
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 - 12/12/2014Fast shipping. Installed the Suspension Enhancement System myself in about 35 minutes on my Tacoma. Very happy with the result! Truck leveled nicely and SES definitely added noticeable stability with a 3200 pound travel trailer. Great staff at e-trailer! Couldn't be more pleased overall! 130274
Since purchasing the Timbren Vehicle suspension product I have towed my 3000 pound R-Pod travel trailer, with a 4 door Toyota Tacoma 4.0 6 cylinder, 2 WD several times and could not be more pleased. The product was very easily installed by me, with a cup of good coffee and about 35 minutes and has performed very well. With my light trailer and this product, I did not feel the need for a more expensive and cumbersome weight balancing hitch. I would highly recommend this product to anyone with a similar towing situation. Hooking up the trailer is quick and easy with nothing extra to do! When not towing, you dont even know the axle bumpers are there. They also come into play when carrying a heavy load in the bed. Thank you very much for checking back.
Ken D - 05/22/2015Received 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 - 10/26/2014We installed per instructions. Easy installation and has been a great help with hauling loads. Would recommend to my friends. Thanks George for a great product and customer service. 639079
So far so good. Better ride when pulling my 27' gooseneck. Not too stiff even when unloaded. Would buy them again. 615719
Great product 615461
These are great! Dont change the ride at all when not in use and make towing my 7000lbs trailer so much more comfortable! Tow with confidence. Easy install took ten minutes with my buddy's lift. Could have been done easily on the ground too. Improves handling and ride when towing 614909
great product, not worry air leak 607218
Easy to install. Took 20 minutes. Quality is great. We'll see how they hold up with the trailer hooked up. 600509
Installed these on my Tundra in less than 30 minutes. Installation was super easy. 598921
Best half ton suspension I've tried they support weight alot better than over leaf overloads ride quieter than coil helpers the rubber spring will never leave you hanging with a flat air bag. My next truck will definitely be wearing these also. They do ride a little rough with a real heavy load but thats to be expected . Absolutely love them. 597240
I've had these on my '16 Tacoma for a year now. When the truck bed is empty, the ride is harsher than before, but not intolerable. When I'm loaded up for hunting (lots of heavy gear, maybe an elk, plus towing a pop-up camper), it's perfect--never bottoms out like it used to. I keep 120 lbs. of sand back there all winter for added traction in the snow, and that helps to smooth out the ride a bit. This photo with sagging rear was BEFORE the Timbrens--now it rides level. 590484
Excellent items Easy to install on you truck 569594
delivery was very good products look very good did not install them yet 559566
Product arrived on time and does exactly what it describes. Little stiffer ride without a load but with a load it made my truck handle so much better at low and high speed. 558016
This is the third vehicle I have installed these on and I have been impressed with the performance of them all....no change in unloaded ride and loaded ride it more stable than before. I recommend this for every truck owner. 552015
These work great and are super easy to install(15 minutes). Keep truck from sagging and tows great. 540177
Went in easily. Truck is already riding better. 528881
Easy install, works great! 518345
Installed on a 2014 Toyota Tacoma and they work great.They help with sway on corners for sure and also they are used when towing an rv.Easy install in about an hour by myself.If driving the truck without any cargo in bed or towing a trailer they do not come in contact with frame so the ride of truck is same as stock.Would recommend. 515067
I measured truck before I install the Timbren Vehicle suspension, then measured after and hooked up my rv and there was only 1/2 inch difference. Wow 509873
Easy to install. Keeps truck level pulling 2 horse trailer with no effect to unloaded ride. Would recommend to anyone pulling heavy trailers or loads. 509148
Easy to install. No sag in the back of the truck when towing or hauling heavy material. I put my 4-wheeler in the bed of the truck with no sagging. 491840
The Timbrens have been great definitely helped towing and having my 4 wheeler in the back. 488369
The install for these went well thanks to the video on etrailer. I did buy a torque wrench and I am glad I did. I was sure I had the nuts on the bracket tighten well, but I wasn't close. The Timbern's seem to do what they say, although it won't be truly know until my first trip with our camper. They definitely are much better than the stock bump stops. 486501
Easy to install and works as advertised. Sometimes the simplest solutions are the best solutions and this would fit into that category. If you need some extra stiffness in the rear end when you are towing, this really is the best product. Nuff said. 471579
Exactly as described , 45 minute installation and made huge difference . Truck is now level with a heavy trailer . No difference in unloaded ride and I actually like the ride when towing, truck handling feels more responsive. 449076
Still satisfied after one year. Works as stated.
Stephen - 11/05/2018These things rock!!!!! They work perfect! My Tundra always had plenty of power but it would sit low when I hitched my trailer (which was completely within the towing specs.). These eliminated that issue and did not change the everyday ride of the truck. 446179
Install only took about 20 minutes. Giving only about an inch and a half between bumper and frame stop with weight of camper it drop to that point. Haven’t been able to pull down road yet but believe it seems that will work great for what I need 438376
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