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  1. Vehicle Suspension
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FITS 2018 Nissan Frontier
Timbren Rear Suspension Enhancement System
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Timbren Rear Suspension Enhancement System

Item # TTORTUN4L
Retail:$316.90
Our Price: $269.36
You Save: $47.54
Vehicle Suspension
Confirmed to Fit
2018 Nissan Frontier

2 Wheel Drive Models

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The best technical support and full vehicle suspension installation instructions. Great price Frontier vehicle suspension and expert service. Nissan Frontier, 2018 vehicle suspension by Timbren are available from etrailer.com. For expert service call 1-800-940-8924 to order your Timbren Rear Suspension Enhancement System part number TTORTUN4L, or order online at etrailer.com.
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2018 Nissan Frontier - Timbren Rear Suspension Enhancement System

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

3,000-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your Nissan Frontier. 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
    • 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


An example of sag on a vehicle's rear axle under a heavy load

Whether you're hauling heavy loads in your bed or cargo area or you're 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 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, 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.


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 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.


An example of a trailers swaying

Because the 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

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.



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

Installation Details TTORTUN4L Installation instructions

Customer Satisfaction Score:


Customer Reviews

Timbren Rear Suspension Enhancement System - TTORTUN4L

Average Customer Rating:  4.7 out of 5 stars   (6038 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.

by:

Definitely a must have when towing..stiff without a load but night and day difference while towing my travel trailer, better traction, steering and braking. Easy quick install..only issue I had was with the long bolts they sent with the spacer kit (optional for lift) the bolt diameter was too wide to fit through the holes on the bracket..but a trip to the local hardware store took care of that.



by:
2013 NissanFrontier

Upon opening the box I noticed that one of the brackets had a defective weld. I have submitted photos. I call the 1 800 etrailer number and had a 1 hour wait time. So I call Timbren direct and they said to send photos of the problem and mailing address and they would send out a new one.

The rest of the product seems to be in good shape and looks easy to install.

Etrailer Expert

Sierra K.

9/8/2021

I am glad that Timbren handled this for you.



by:
2018NissanFrontier

Installed on a 2018 Nissan Frontier 2 wheel drive.
I haul a small travel trailer and firewood from time to time.
These springs really help out with the additional weight.
The ride is slightly more firm over rough roads ( yes I have them installed correctly with a gap between the factory springs) but the ride is livable fir me. I recommend them.



by:
2011 Toyota Tacoma

Installed on my 2011 Tacoma TRD Off-Road Access cab long bed with a cab high shell. Unloaded the frame sits 1/2" above the rubber 'spring'. This is perfect such that around town and unloaded the drive is the stock suspension and when cornering they come into contact noticeably reducing roll. When the truck is loaded they come into full time contact providing a much superior ride with no bottoming, better ride height and greatly reduced roll. Really makes a difference on backcountry roads when loaded with camping gear. When I installed them last year I was concerned with the rubber potentially deteriorating, but since then they have been on many loaded camping trips on backcountry roads including a long trip from UT to AK/Yukon and back so they have been thoroughly tested with no signs of the rubber failing. Attached is photo showing ride height with easily 1,000 lbs of load added to the truck for an extended camping expedition. Even if you don't carry heavy loads or trailers, I would install these anyway just for the greatly improved roll resistance when daily driving. Cost is high but they work and last justifying the cost.



by:
2019 NissanFrontier

Timbren Rear Suspension Enhancement Kit was exactly what I needed to easily improve the handling of my 2019 Nissan Frontier while hauling heavy loads. The tutorial videos from etrailer are always extremely helpful and make installation very easy. I had the kit installed in about 45 minutes with no problems. The Frontier's ride hauling my next load of large tree branches to our local recycling facility was much improved.



by:
2017 NissanFrontier

The Timbren suspension was delivered on time .
The unit was installed using the instructions provided and took about 45 minutes for both sides of the rear axle. I have not put a load on the truck yet to see how it works.There is about 1" of clearance between the rubber timbren stops and the frame of the truck,so it hasn't affected the way the truck handles for now,I'll be able to tell more about it once I hitch my Travel Trailer up.The installation was done on a 2017 Nissan Frontier.



by:
NissanFrontier

The Timbren system improved the right of my truck especially when pulling a heavy trailer. It's a Nissan Frontier and I have far greater stability now when pulling the trailer. The ride makes it feel like a larger truck but not too rough. Very happy that I purchased this for the truck, and the installation was very easy on the nissan.



by:

For the way I use my truck, these are great. Much better than heavy springs for occasional load or trailer. I would recommend these. And great customer service



by:
2010 NissanFrontier

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.

Rick S.

1/29/2013

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.

Patrick B.

2/8/2013

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.


by:
2019 NissanFrontier

Easy install. I can see where the stock rubber bumpers hit the stop. Much easier than installing overload springs as some Frontier owners do to reduce the sag.



by:
2013 Toyota Tacoma

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.



by:
Toyota Tacoma

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.

Dan S.

1/29/2015

After a year or more of hard use, the product is still going strong thanks for asking!



by:
2013 NissanFrontier

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.

Dennis O.

1/18/2016

Still working great!!



by:

I feel better knowing that these are on my vehicle. I do not tow often so I felt this item was better for me than a air ride suspension. I am happy with my purchase. Easy to install maybe 20 minutes and I was done. Bigger than stock help support weight of my camper better. etrailer customer service was very friendly and helpful with my purchase.

Todd L.

8/20/2018

Works so good I forget it is there.



by:

Excellent product,great service from Adam E highly recommend doing business with these people



by:
2019 Toyota Tacoma

These things should have been installed from the factory. Body roll is basically non existent in a turn now, and going over large bumps, like poorly made roads, is so much more comfortable. Can't wait to tow with these.



by:

I have used these on all my vehicles. Definitely helps with keeping the load from squatting the rear and keeping steering in tact. Helps with body roll when making tight corners. A must buy.



by:

I've owned this product and had it installed on my 2017 Nissan Frontier for over a year now. I've towed a Travel Trailer RV behind my truck for a month and a half straight, and on many long and short weekends this year. What I can tell you is, I would buy this product again. I do not notice it at all when not towing, the ride is smooth and the suspension acts as it would while daily driving. However, when I have a load on the hitch, the truck doesn't sag, the suspension doesn't feel stiff, and my load and truck are level. Provides a good peace of mind that the load is level and clearance for the hitch due to no sagging of the rear suspension under normal loads. I recommend this product!



by:
2019 Chevrolet Silverado 1500

Product appearance is high quality. Installs easily. I will know more in a couple weeks when I tow the trailer for 1500 miles.

Ken S.

8/23/2022

Fantastic. We have towed through Calif., AZ., NM., and Colorado. Truck is stable on mountain roads.



by:
2014 NissanFrontier

I put these on my 2014 Nissan Frontier SV (long box). Overloaded the truck for a move from Alaska to Michigan (3,000+ miles, took the long way to hit up all the national parks). Great ride all the way. Down side to not being adjustable, like airbags, it bucks when riding empty but I don't care. Note for installing, just because mount is centered on leaf spring does not mean it meets the frame/plate on center. Mount accordingly.



by:

I have a 2006 Toyota Tacoma that I use to pull a travel trailer. The truck has plenty of power to pull the trailer but the suspension has always been outmatched by even light loads (500-1000 lbs). I have had this system in my truck for about a year. It has been tested pulling trailers weighing from 500-5500 lbs and bed loads in excess of 2000 lbs. The product performs admirably keeping the truck suspension from bottoming out. It does not assist with emergency handling under load (sway) but I believe that is beyond the scope of the design. I have not noticed any undesirable or unintended alteration to the truck's suspension in normal driving conditions or while driving off road. For it's intended purpose the Timbren system performs very well.



by:
2019 NissanFrontier

Thank you Jameson C for recommending the Timbren Rear Suspension Enhancement System for my 2019 Nissan Frontier 4x4. Very easy to install and with out any load did not stiffen the ride. With no load the Timbren has about 1/2" space between it and the frame allowing it to ride like it did with out it. With the trailer the ride is a bit stiffer but DEFINITELY feels more controllable. The squat in the rear with the 20' travel trailer went from 2.25" to 1".



by:

They worked when I pulled a heavy trailer, but when not pulling a trailer the truck rode so ruff it hurt my back so I ended up taking Timbren rear suspension back off. If you are going to pull heavy trailers all the time or have a heavy load on your truck all the time, then they are good, otherwise do not put these on your truck



by:

Heavy duty. Ride not affected under no load. Very stiff with load but helps to keep truck level and reduces sway on turns. Level is important at night when headlights are on. Simple to install.



by:
2017 Honda Pilot

Quality product, inexpensive installation. Had my mechanic install, could do it myself but did not want to mess with a new vehicle! Had these on my Honda pilot and they worked great towing my 17 Casita ! Would recommend.

Robin

11/14/2021

Excellent, good product


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See what our Experts say about this Timbren Vehicle Suspension

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    The Timbren Rear Suspension Enhancement System part # TTORTUN4L is designed to work with the 3 leaf setup on a 2017 Toyota Tacoma, but not the 4 leaf setup. For a 4 leaf setup you would need to use the Timbren Rear Suspension Enhancement System part # TTORTUN4. The jounce spring kit designed to work with 4 leaf spring models has a shorter mounting brackets to allow for the recommended 1/2" - 1" of space between the bump stop and rear axle. Although both jounce springs are the same, you...
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  • What Rear Suspension Enhancement do You Recommend for My 2021 Nissan Frontier?
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    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.
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  • Are There SumoSprings for a 2018 NIssan Frontier
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  • What Rear Suspension Enhancement do You Recommend for My 2022 Nissan Frontier Pro?
    I have a great rear suspension enhancement solution for you. I checked in with both our air bag manufacturers (Air Lift and Firestone), and they currently do not have an air bag system designed to fit your rear axles of your 2022 Nissan Frontier Pro. However, we do have a great Timbren option that will give you extra support on your rear of your vehicle. For that route, I recommend the Timbren Rear Suspension Enhancement System # TTORTUN4L. Not only will this work with your Pro model...
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  • Clearance Between Timbren Rear Suspension System and Frame Rails On a 2021 Nissan Frontier
    With the Timbren Rear Suspension Enhancement System # TTORTUN4L installed on your 2021 Nissan Frontier SV you should see 1/2" to 1-1/2" of clearance between the spring and your frame when there is no weight in the Frontier. Any additional weight such as tool boxes or hitches will cause the gap to be reduced or eliminated.
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  • 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...
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  • 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...
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  • Recommended Rear Suspension Enhancement for my 2018 Nissan Frontier
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  • What Rear Suspension Enhancement Fits A 2019 Nissan Frontier 4WD With 2 Lift and Leaf Springs?
    I have a different option, but the SumoSprings # SS48DR you were looking at are designed for models of the 2019 Nissan Frontier that have coil springs. Since your truck has leaf springs you will need to go with a different option. Due to the 2" add a leaf the only option for additional support is going to be the Timbren Rear Suspension Enhancement System # TTORTUN4L with two 1" spacers # A25723-90AH00. You will just need to pick up some 3/8" x 3-1/2" grade 8 bolts from your local hardware...
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  • How Much Space Between Leaf Spring And Frame For Timbren SES on 2011 Nissan Frontier
    Timbren recommends a 1" gap when the Timbren Rear Suspension Enhancement System # TTORTUN4L is installed. The overall height of this kit is 4.6" so the distance between your leaf spring and the point of contact where the old bump stop hits should be 5.6". It doesn't have to be perfect, but the greater the gap the longer it will take to engage. It is possible to add spacers to close the distance using the 1/2" # TA25722-90P00 and 1" # A25723-90AH00. Adding spacers will require longer bolts...
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  • Will the Timbren Rear Suspension Enhancement System Fit a 2018 Toyota Tacoma with 3 Inch Lift
    The Timbren Rear Suspension Enhancement System will perform just as well on a vehicle that has a three inch suspension lift as a vehicle that is stock height. However, you will need to add spacers so that the Timbren's engage at the right time. If your 2018 Toyota Tacoma has a three leaf spring pack then you will want to use part # TTORTUN4L but if it has a four leaf spring pack then you will want to use part # TTORTUN4. For the spacer you can use the Timbren 1" Spacer For Raised Frame...
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  • Will RoadActive Suspension For 2019 Toyota Tacoma Give Smoother Ride Than Timbrens
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  • Will The SumoSprings Solo Custom Helper Springs Provide Lift To A 2018 Nissan Frontier?
    Just like the SumoSprings Solo Custom Helper Springs # SSR-612-47, the Timbren Rear Suspension Enhancement System # TTORTUN4L will also replace the factory bump stops and mount directly over the axle, there is no offset. As far as actual lift goes, neither of these systems actually provide any lift as they are not designed to do so. Finally, for life expectancy, SumoSprings does not have a finite number assigned to this however, they do stand behind their products and offer a limited...
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  • Comparing Timbren Rear Helper Springs for a 2016 Toyota Tacoma 4x4
    The springs in both Timbren kits for a 2016 Toyota Tacoma 4x4, # TABSOSR, and # TTORTUN4L, are both 3-3/4 inches tall. The difference is that kit # TABSOSR is intended for vehicles without a U-Bolt Flip Kit. And # TTORTUN4L is designed for vehicles with 3 Leaf Springs in the rear suspension. To avoid a stiff ride a better option would be air bags, # F2407. They will allow you to adjust the air pressure in the bags for the best ride quality. I have linked a video review of the Firestone...
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  • Timbren Jounce Spring Installation in 2012 Toyota Tacoma 4X4 non-Pre-Runner with 3-Leaf Springs
    The Timbren rear jounce spring kit # TTORTUN4L is the correct one for the 2012 Toyota Tacoma 4X4 non-Pre-Runner that has the OEM 3-leaf rear spring suspension. The bottom leaf of these springs can be seen in the linked photo that shows a customer's installation. You'll notice that the bottom leaf does appear to be thicker than the other two.
    view full answer...
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  • Is Timbren Suspension Enhancement for 2019 Nissan Frontier Compatible With Lifted Truck
    You can install the Timbren Rear Suspension Enhancement System # TTORTUN4L on your 2019 Nissan Frontier with a suspension lift. In order to do so, you need to add the appropriate amount of spacers that will allow you to wind up with between 1/2" and 1-1/2" of space between the spring and its contact point above the axle. The spring itself measures 3-3/4" tall so you can use that as a guideline to determine how many of the following spacers you will need: - Timbren 1" Spacer # A25723-90AH00 -...
    view full answer...
  • Best Suspension Enhancement for a 2018 Nissan Frontier with Factory Ride Quality
    In regards to suspension enhancements for a 2018 Nissan Frontier, you have a few options but there are none from SuperSprings. The best option for unloaded ride quality would be the Firestone Ride-Rite Air Helper Springs part # F2558. However, if you don't want the maintenance upkeep of the airbags then the Timbren Rear Suspension Enhancement System part # TTORTUN4L are a great second best option. They can engage if you go over a big bump but aside from this they will retain a mostly factory...
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  • Suspension Enhancement for 2019 Nissan Frontier 4x4
    We have Timbren suspension enhancement kits that fit your 2019 Nissan Frontier 4x4 with the part # TTORTUN4L but we do not have any SumoSpring kits that fit your vehicle. This kit will give you an additional 3,000 lbs of suspension support.
    view full answer...


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