1. Vehicle Suspension
  2. Timbren
  3. Jounce-Style Springs
  4. Rear Axle Suspension Enhancement
  5. Standard Duty
Timbren Rear Suspension Enhancement System

Timbren Rear Suspension Enhancement System

Item # TTORSEQ
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Retail:$265.18
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Vehicle Suspension

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TTORSEQ - Standard Duty Timbren Rear Axle Suspension Enhancement
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3,000-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. Lowest Prices for the best vehicle suspension from Timbren. Timbren Rear Suspension Enhancement System part number TTORSEQ can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Timbren Vehicle Suspension - TTORSEQ

  • Timbren
  • Jounce-Style Springs
  • Rear Axle Suspension Enhancement
  • Standard Duty

3,000-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:

  • 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 vehicle
    • Becomes more rigid as more weight is added
      • Increases stability - providing great performance while hauling heavy loads
      • Reduces vehicle 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 vehicle's suspension


Specs:

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


Reduced rear axle sag with Timbren suspension enhancement

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.


Diagram of the Timbren spring installed

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.


Action 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 increases resistance, stiffening the suspension and keeping your vehicle level.


Timbren suspension system works to prevent body roll

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.


Trailer swaying as it is towed behind a truck

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.


An empty truck on a bumpy road without Timbren SES

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 Suspension Enhancement Compared to the Competition

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.



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

Installation Details TTORSEQ Installation instructions

This Product Fits The Following Vehicles




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 Transcript for Timbren Front and Rear Suspension Enhancement Systems Review

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..


Customer Reviews

Timbren Rear Suspension Enhancement System - TTORSEQ

Average Customer Rating:  4.7 out of 5 stars   (2107 Customer Reviews)

3,000-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.

- TTORSEQ
by:
2004 Toyota Sequoia

Easy install on an '04 Sequoia. Suspension is 10x better with these pulling our boat! No more of that Toyota sag when pulling either. Awesome product!! 132829


Comments
A year later and Im still loving this product!
Nick F - 05/27/2015

12067

- TTORSEQ
by:
2011 Toyota 4Runner

Received the product promptly. Exactly what I needed .... decided on this instead of air bags since I only tow a boat. 37180



- TTORSEQ
by:
Lexus GX 460

I am dealing with Timbren. The washer for mounting the rubber spring to the mounting plate clearance hole is too small for the bolt diameter. The washer is not something you can get out without damaging in my opinion. The bolt also will not thread completely into the mounting plate because of poor threads ( not tapped correctly). Galling of bolt if you try to tighten. Very poor QC or inspection at Timbren or wherever. Once again, working eith Timbren on this. Maybe you should check you kits at etrailer!! 704185


Comments
I pulled the kits we have in stock and they check out fine. The washer inside the spring had the same diameter as the spring for the bolt. Could you send in a photo of your kit?
-- Victoria B - 09/25/2019

61509

- TTORSEQ
by:

Item arrived nice heavy duty brackets and hardware supplied Very thick rubber springs. Should install very easy 116038


Comments
Install was a breeze. Its been a year and I can definitely say they make a difference. I used to go over some deep pot holes or a deep depression in road surface and my teeth would jar. Now when this happens no bad reaction as before install.Very happy with them.
Buddy - 02/07/2015

9342

- TTORSEQ
by:
Lexus GS 460

Purchased for Lexus GX460. Solves rear sag problem when towing with medium to heavy trailers. I don’t notice any difference in the ride when not towing a trailer with the helper springs. Should really come standard with the vehicle I’m the first place in order to utilize the towing capacity. I would highly recommend this cheap fix. 468046



- TTORSEQ
by:
Lexus

Works as advertised. Really helps my Lexus GX when towing 6500lbs camper. Especially when going over bumps. Does not effect ride when not towing. 662538



- TTORSEQ
by:
2006 Toyota 4Runner

The simple fix for the sagging situation. With these new Timbren 'bump stops' in place, both my camp trailer and vehicle *(2006 5 Runner---better than a 4 Runner) ride level and smooth...and even looks cooler than cool. 264664



- TTORSEQ
by:

Not really happy. They do provide some additional support. However, they interfere significantly with the factory hydraulic self leveling suspension system called Automatic Height Control. Most definitely will not purchase again! 676582



- TTORSEQ
by:
2001 Toyota Sequoia

My review is on the ordering and installation only as I haven't hooked up my boat to test them out yet. Ordering and deliver was easy/fast and the installation was a piece of cake - probably 10 minutes total for both sides. Seems like good quality too. 488906



- TTORSEQ
by:

Working great. I had read reviews about them being too stiff whem you aren't pulling a trailer, but it seems like they softened up a bit after first putting them on. I felt a few hard jolts going over speed bumps and such the first few days, but now I don't notice them at all when I don't have a trailer attached. They are still improving the ride with a heavy trailer. I'd give 5 stars but my mechanic neighbor had to help me install them because there was something wrong with the bolts that came in the package. It was a year ago and I can't remember the details. Without him I think I could have returned them and gotten a fix and installed them by myself. It's a very simple install when all the parts are in good shape. 549083


Comments
Still doing their job without me needing to think about it, which is awesome.
Bryan - 08/02/2019

58533

- TTORSEQ
by:
2016 Toyota 4Runner

These worked great on my 2003 4Runner Limited. I can tow my 16 / 7 ft. trailer with very little squat on the rear axel ... The install was super easy and I didn't need a jack-stand... Just a wrench... That's It !! I took some heavy dips on some Mexican roads with a 7,000 lbs trailer (700 lbs tongue weight). Also the rear cab had 500 lbs..... I was doing 55 mph and I believe it saved me from a hard impact. Courtney B... (the rep)... Recommend the product and I couldn't be happier! 273549


Comments
Its been 2 years now and all is still working well.
Mike P - 07/27/2017

26665

- TTORSEQ
by:
2015 Toyota 4Runner

Received the product and installation was very easy. The longest thing to do in the process is taking your tires off. Also make sure you have a vice or c- clamp because to tight the rubber piece to the bracket takes a lot of torque. Have not been able to test it will update my comments later 499383



- TTORSEQ
by:
2017 Toyota 4Runner

Piece of cake to install, has no effect on normal ride (which is good). It's too soon for me to give any meaningful feedback re use when vehicle is loaded but everything is positive so far and I can definitely see how they would help under heavy loads. Compared to the standard bump stops these are almost twice the height so the axle will definitely hit these before they would've hit the OE version and give the heavy duty nature of these, combined with the "hollow" design I can envision how they'll add to the stability of the suspension under max loads. 450768



- TTORSEQ
by:
2011 Toyota 4Runner

Installation was relatively straightforward and took about an hour. Make sure that you center the enhancers directly over the axle.....FYI-if you center over the axle, the bolts may not be centered in their slots when attaching the units to the frame. I towed my 3200 lb boat trailer about 35 miles today for the first time since the installation and there was a definite difference in the ride and feel. Big bumps or variations in the pavement felt much better.....no more bouncing. Definitely a must have for towing with your 4Runner. I would have rated 5 stars but I felt the price was a bit high for the product. 213689



- TTORSEQ
by:
2007 Toyota 4Runner

This is regarding the FRONT installation. Which is everything I'd hoped for. The truck still rides great but no longer bottoms out over any pebble in the road. The front end no longer heals over in turns. I wanted to install a rear kit but it arrived as a mis matched box of parts. To be continued. 231435



- TTORSEQ
by:
2011 Lexus GX 460

Product came securely packaged and complete and quick. Took about 45 mins to install. I bought this to try to reduce the 3 1/2 inch sag at the hitch of my Lexus GX460. It did that well. I now only sag 2 inches that I feel is acceptable. The trailer has about 484 lbs weight. The ride doesn't seem affected and towing bounce(porpoising) is gone. Thank you etrailer. 560925


Comments
Timbren are working fine. Towing is much more controlled. I am glad i purchased them. I don’t notice any ride difference when running empty.
Charles - 09/02/2019

60705

- TTORSEQ
by:
2003 Toyota 4Runner

I put TTORSEQ on the rear of my 2003 4Runner Sport, I had noticed the 4Runner had settled over the years particularly in the rear when I tow a Chalet camper. I was looking for helper springs or replacing the rear springs (very expensive). I was not aware of this type of suspension support but it came up on a Google search. They work great! There is a significant difference when towing the camper. ONE recommendation for Timbren. In the installation instructions include torque values for the bolt attaching the bump stop to the bracket. I was surprised at how much torque was required and initially thought Timbren had sent me the wrong bolts - they had not. 281057



- TTORSEQ
by:
2015 Toyota 4Runner

Very EASY to install... 380156



- TTORSEQ
by:

Some positive results using these. Vehicle has less sag with approximately 6K lbs trailer on back. Not as dramatic as I hoped. 778976



- TTORSEQ
by:
2017 Lexus GX 460

Product came as described and works well from what I can tell after about 30 miles of use. Installation was easy, taking about 20 mins per side without a lift or removing tires. 775863



- TTORSEQ
by:

Timbren helper bump stop was very easy to install. My boat trailer rides much better after installation. The boat and trailer combined probably only weigh 4200 lbs but the tongue weight is slightly heavier than I would like. Suspension is not being pushed down to the point that affects headlight alignment anymore. Great easy system that allows for normal and comfortable ride when not in use. 765469



- TTORSEQ
by:

Very easy to install. The ride is very smooth. Highly recommended! 697959



- TTORSEQ
by:

Installed on a 2004 Toyota 4Runner. We tow a 22-foot Pathfinder bay boat with it. I previously had airbags on it but they kept breaking and leaking. Installed these and they work perfectly! No maintenance and they get the job done. Very little squat in the suspension with the boat hooked up. Easy to install too. Don't notice them at all when the vehicle is unloaded. 692805



- TTORSEQ
by:

serve its purpose. just something extra to help with my towing 666861



- TTORSEQ
by:
2017 Toyota 4Runner

Worked great on 2017 4runner towing Keystone Hideout 175lhs. If you install them carefully, you can jack up each side as high as you can and take off the existing bumpstop and get the new bracket in and then bolt on the rubber spring. Took an hour including getting tools out. 643856


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Ask the Experts about this Timbren Vehicle Suspension

  • Recommended Suspension Enhancements for a 2016 Toyota 4Runner TRD
    Yes, the Timbren Rear Suspension Enhancement System part # TTORSEQ will fit your 2016 Toyota 4Runner TRD. I called my contact at Timbren to confirm this. I also recommend the Timbren 1/2" Spacer For Raised Frame Vehicles part # TA25722-90F00 to offset the lift on the TRD models. The Firestone Coil-Rite Air Helper Springs part # F4135 will also work with your 2016 Toyota 4Runner TRD. The main difference between these and the jounce springs is that they are adjustable which means you can...
    view full answer...
  • Height of Timbren # TTORSEQ and Spacers Needed for Lifted Truck
    I went out to our warehouse and measured an overall height with the mounting bracket of 5 inches for the Timbren Rear Suspension Enhancement System # TTORSEQ. Timbren recommends having a 1/2 inch to 1-1/2 inches between the spring and the axle when the truck is empty so if you measure between the frame where your bump stop is mounted and the axle and get greater than 6-1/2 inches you will want to fill that gap with a spacer or two. We have 1 inch Spacers with # TA25723-90AD00 or 1/2...
    view full answer...
  • Timbren Rear Suspension Enhancement on my 2019 Toyota 4-Runner
    It can be a little confusing! Short answer thought this is exactly what you need. Long answer the Timbren Rear Suspension Enhancement System part # TTORSEQ has a support capacity of 3000 lb. as a pair meaning it can support up to that weight. It will take alot of the squat and sag out of the 4-Runner. With your boat weighing 4200 lbs. its tongue weight is probably around 630 lbs ish. Meaning your putting that weight on to the Timbrens which will be well withing their range and make...
    view full answer...
  • Is Weight Capacity of Timbren Springs for 2012 Toyota 4Runner for the Gross Trailer Weight
    The capacity rating on Timbren springs such as # TABSTORSEQ or # TTORSEQ for your 2012 Toyota 4Runner is the vertical load capacity of the springs as a set. So in other words it is how much weight pushing down on them they can handle. In either case they are rated for far more weight than the tongue weight capacity of the vehicle itself . . . unless you plan on towing a 30,000 to 60,000 pound trailer! (Please don't attempt to tow a 30K to 60K pound trailer.) Given the weight of your...
    view full answer...
  • Will Timbren Rear Suspension Enhancement System Fit 2006 Toyota 4Runner
    The Timbren Rear Suspension Enhancement System # TTORSEQ will work well for your 2006 Toyota 4Runner 4WD. These rubber springs will install in place of the factory bump stop and measure approximately 4-1/2 inches with the bracket. The Timbren Suspension Enhancement System will help your vehicle ride level when towing or carrying heavy cargo. The weight capacity of the vehicle is not increased when using the # TTORSEQ system. I have attached an installation video and the installation...
    view full answer...
  • Torque Specs for Timbren Rear Suspension System # TTORSEQ
    I spoke with my contact at Timbren and he said they don't have an official torque spec for the hardware on the Timbren Rear Suspension Enhancement System # TTORSEQ you referenced but tightening all the hardware to around 20 foot-pounds will be sufficient. These springs are confirmed to fit your 2012 Lexus GX 460 and feature a 3,000 pound capacity. I have attached the written instructions and a video demonstration that you can check out as well.
    view full answer...
  • Rear Helper Springs for a 2014 Lexus GX 460
    The 3,000 pound capacity of the Timbren springs # TTORSEQ is the capacity of the system or, in other words, the amount of weight pushing straight down on them that they can handle. So if you put 2,000 pounds of stuff over the rear axle of your 2014 Lexus GX 460 the springs would still have capacity to spare. Of course you wouldn't put that much weight in the vehicle but that is just an extreme example. If you towed a trailer that weighed 6,500 pounds the tongue weight would be in the...
    view full answer...
  • 2017 Lexus GX 460 Timbren Rear Suspension Kit Recommendation
    Yes, the Timbren Rear Suspension kit part # TTORSEQ is a confirmed fit for your 2017 Lexus GX460 and would work great for you.
    view full answer...
  • Rear Helper Springs for a 2006 Toyota 4Runner with 1 Inch Rear Lift Kit
    If you are getting a lift kit on your 2006 Toyota 4Runner then air bags that fit inside the coil springs are not going to work. There are no spacers to make up for the additional space created by the lift kit for the coil spring air bags. The exception is if you were to have a body lift instead of a suspension lift since in that case there would not be any extra space. There are spacers available for the Timbren systems though so I recommend going with # TTORSEQ. If the lift kit does...
    view full answer...
  • 2019 Toyota 4Runner Towing Capacity
    From what I found online it looks like your 2019 Toyota 4Runner has a towing capacity of 5,000 lbs like you mentioned. You'd need to keep the weight of the trailer under that and you'd be fine. Towing capacities for vehicles are figured conservatively so as long as you are under them you are totally safe. For suspension enhancement to help reduce sag when towing the Timbren kit part # TTORSEQ is confirmed as a fit and will work well. It won't give you additional towing capacity beyond...
    view full answer...
  • Recommended Suspension Enhancement System For 2004 Toyota 4Runner
    I recommend installing the Timbren system # TTORSEQ over the Firestone # F4135. Since you said you occasionally tow or carry a maximum of 3,000-lbs, the Timbren system would be a nice option because you do not have to make any adjustments to the system. As more weight is added to the vehicle either from tongue weight when towing or loading the back of the vehicle, the Timbrens will stiffen to provide more support for the load. Using the Firestone system means you will need to adjust...
    view full answer...
  • Timbren Suspension Enhancement for 2008 Toyota 4Runner With 3 Inch Lift
    The best option for your 2008 Toyota 4Runner with a 3 inch lift kit would be the Timbren Rear Suspension Enhancement System # TTORSEQ you mentioned with six of the Timbren 1" Spacer For Raised Frame Vehicles # A25723-90AH00 (three for each side). The reason is, air bags that fit your 4Runner are installed inside your coil springs, which won't help as much with the leveling as the Timbrens, which replace the bump stops on your 4Runner's frame. The Timbrens will do a great job of helping...
    view full answer...
  • Can Timbren System be Used With Weight Distribution on 2007 Toyota 4Runner
    With a properly rated weight distribution system that is properly set up you should not need a Timbren. If you are still getting sag then one of three things is happening. Either you are just exceeding the towing capacity of your vehicle which is why the WDH hitch can't keep up, your system is rated too low, or you don't have enough spring bar tension. That being said a Timbren kit part # TTORSEQ is a fit for your 2007 Toyota 4Runner and would give you additional suspension support....
    view full answer...
  • Recommended Timbren Rear Suspension Enhancement System for 1999 Toyota Land Cruiser Towing a Boat
    For your 1999 Toyota Land Cruiser, I recommend the Timbren # TTORSEQ springs. They are a confirmed fit for your vehicle and will compress under weight to help your vehicle suspension absorb shock, reduce body roll and sag. The rear kit will work independently of the front suspension, so you don't need to install in the front unless you have issues there you wish to address. These springs will help stabilize the ride of your Land Cruiser and will help the headlights to have the correct...
    view full answer...
  • Suspension Enhancement for 2018 Toyota 4Runner to Reduce Towing Sag
    You'll have to check the owners manual of your 2018 Toyota 4Runner to determine if it is rated for use with a weight distribution system. Or it can be listed on the hitch as well. You'll see two sets of towing capacities most likely there. One as "weight carrying" and one with "weight distribution. Otherwise you'd want to look into suspension enhancement like the Timbren kit part # TTORSEQ which is a confirmed fit for your vehicle and will give you additional rear suspension support...
    view full answer...
  • Compatibility of Daystar 3/2 Leveling Kit with Timbren Spring # TTORSEQ in 2004 Toyota 4Runner 4WD
    The Timbren Rear Suspension Jounce Spring System # TTORSEQ, like all such suspension enhancement kits, is intended to be installed on a vehicle whose OEM suspension components are still in good working order. An aftermarket product like the Timbrens, good as they are, do not have the ability to correct for the sag from worn-out springs. They are intended to provide additional support to a functional suspension that is under load. According to the Daystar website the rear leveling kit...
    view full answer...
  • Suspension Enhancements for a 2015 Toyota 4Runner with Taller Rear Coil Springs
    In order to make sure that we get the correct Firestone Coil-Rite Air Helper Springs for you I would need you to take a few measurements. The measurements I would need are the inside diameter of the coil spring as well as inside height while the vehicle is sitting at ride height and the bump stop is removed. Once you obtain this information I would then be able to make sure you get the correct kit. Unfortunately, I wouldn't be able to offer any recommendations without these measurements....
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  • Solution for Reducing Rear Sag on Off-Road Toyota 4Runner with Trailer Connected
    The only suspension enhancement product available that is confirmed to fit the rear axle of your 2017 Toyota 4Runner is the Timbren Rear Suspension Enhancement System # TTORSEQ. These jounce-style springs will do a nice job of reducing rear sag on your vehicle, however they likely aren't the best solution for your particular application. This is because jounce-style springs like these are going to reduce the space between the axle and rubber stops, which means you will certainly feel them...
    view full answer...
  • How Close to Vehicle Frame Should Timbren Springs Sit Once Installd
    Timbren likes to recommend 1 inch between the axle and the Timbren when the truck is unloaded. We have found that this works the best. For a 1/2 inch spacer you would need the part # TA25722-90P00 and then for a 1 inch spacer part # A25723-90AH00. One of each of these will work great to get your Timbren setup right where it needs to be.
    view full answer...
  • Solution for Timbren System that is Spaced too Far Away from Vehicle Axle
    Timbren likes to recommend 1 inch between the axle and the Timbren when the truck is unloaded. We have found that this works the best. What you would need then is a 1 inch spacer part # A25723-90AH00 and a new longer bolt that you would have to source elsewhere and your Timbren would be properly setup on your vehicle. The spring being just slightly off-center like yours would not be a problem either.
    view full answer...
  • Suspension Enhancement Recommendation for 2018 Lexus GX 460
    For your 2018 Lexus GX 460 we do have suspension enhancement available like the Timbren Kit part # TTORSEQ, but we do not have any air bag setups at this time (April 2018). The advantage the Timbrens have is that they don't require any air pressure maintenance and have a simpler install.
    view full answer...
  • Will Timbren Jounce Spring TTORSEQ Make Off-Road Ride Quality Rough
    Timbren rear axle jounce spring kits, like # TTORSEQ that fits your 2005 Lexus GX 470, are normally not engaged with the axle with the vehicle unloaded, meaning not full of passengers and/or cargo and not loaded by trailer tongue weight. If you were to be on a rough off-road surface with the vehicle unloaded you would be likely to feel the springs engage the axle when a wheel suddenly climbs up out of a rut. Since these springs are rated for 3000-lbs they are pretty stiff. They will...
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  • What is the Height of a Timbren # TTORSEQ Bump Stop
    If you check out the attached review video you will see that at the 2:33 mark he measures one of the bump stops that comes with the Timbren # TTORSEQ and it has an overall height measurement of 3-5/8". This kit is confirmed to fit your 2015 Toyota 4Runner so unless you have lift on your 4Runner it will fit perfectly. Since you only experience some sag when you are towing your tent trailer and carrying your bike rack I really wouldn't go with an air bag system. The installation is more...
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  • Helper Spring Suspension Options for 2006 Toyota 4Runner
    Since you don't continually carry loads in your cargo area, I'd recommend the Timbren # TTORSEQ aeon springs. The Timbren springs don't have any effect on ride until the extra weight is added to the rear of your vehicle. As more weight is added, the springs will get stiffer. The springs will not increase the cargo capacity of your vehicle, but they will help level our your ride height when you're carrying the heavy equipment around. Air suspension systems like # F4135 are great, but...
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  • Weight of Timbren Springs for 2016 Lexus GX 460
    The Timbren Suspension Enhancement System # TTORSEQ that you referenced for the rear axle of your 2016 Lexus GX 460 weighs just about 6 pounds total (3 pounds per spring). The Front Timbren Suspension Enhancement System # TTOFTAC4A for your vehicle only weighs about 2 pounds in total. I have attached the installation instructions for these components that you can also take a look at.
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  • Will Timbren Suspension Enhancement Improve Ride On 2012 Toyota 4Runner When Empty
    Installing a suspension enhancement system like the Timbren Vehicle Suspension, part # TTORSEQ will not affect the ride of your 2012 Toyota 4Runner when empty. The system is designed to help the ride when a heavy load is placed in your vehicle. It will work independently side-to-side to help compensate uneven loads and takes the majority of the bumps when traveling on rough roads, while reducing body roll on turns. I am not aware of a system that will lower your 4Runner. You will...
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  • Who to Have Install Timbren Kit in 2011 Lexus GX 460
    I am sure there are. What you'll want to do is find a local mechanic with a good reputation to install the part # TTORSEQ. The install of these is pretty basic for most mechanics so any trustworthy shop local to you would be a great choice.
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  • Clearance Between Axle and Spring of Timbren Suspension Enhancement System for 2006 Toyota Sequoia
    After installing the Timbren Rear Suspension Enhancement System # TTORSEQ on your 2006 Toyota Sequoia, there will be approximately 1/2" to 1-1/2" of clearance between the spring and axle. The Timbrens are among the most popular of the rear suspension enhancements available, and I highly recommend going with them. As you can see by the accompanying review one of our customers left after using the Timbrens on their 2006 Toyota Sequoia, the ride will not be changed. I have added a link...
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Info for this part was:

Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Expert Research:
Jeffrey L
Video by:
Joshua S
Video by:
Jonathan Y
Test Fit:
Nicholas E
Test Fit:
Robert C
Video Edited:
Jacob T
Video Edited:
Dustin K
Video Edited:
Chris R
Installed by:
Cole B
Updated by:
Mary E

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