bing tracking image
  1. Vehicle Suspension
  2. Timbren
  3. Bump Stops
  4. Towing/Load Leveling
  5. Extra Heavy Duty
  6. Rear Axle Suspension Enhancement
Timbren Rear Suspension Enhancement System
Special Savings on Select Timbren Items. See Cart for Savings.
Timbren

Timbren Rear Suspension Enhancement System

Part Number: TUR350
In Stock
ChristmasTree SantaHat Arrives before Christmas SantaHat ChristmasTree
$398.07
Retail:$468.32
You Save: $70.25
Vehicle Suspension
Instant Rebate
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

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. Great Prices for the best vehicle suspension from Timbren. Timbren Rear Suspension Enhancement System part number TUR350 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (6231)
  • Q & A (0)
  • Photos

Timbren Vehicle Suspension - TUR350

  • Bump Stops
  • Towing/Load Leveling
  • Timbren
  • Extra Heavy Duty
  • Rear Axle Suspension Enhancement
  • Suspension Only

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:

  • Improves suspension, handling and safety
  • Provides additional support as needed so you always have a smooth, comfortable ride when towing or hauling gear
    • 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 hollow rubber springs, mounting brackets and hardware
    • Replaces axle bump stops
    • Drilling required for installation
  • Capacity: 6,000 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 when loaded. 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 when loaded or towing because the rubber has more travel.



UR350 - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TUR350 Installation instructions



Customer Satisfaction Score:

Ratings & Reviews

4.7

3504 reviews
5 Stars
(2785)
4 Stars
(457)
3 Stars
(113)
2 Stars
(68)
1 Star
(81)
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.

by:

I actually found that airbags worked better for my truck and trailer. I ordered those from you as well. May I return the Timbrens for at least partial store credit?



by:

I have not fully loaded my Odyssey yet BUT compare to original “pacifiers” which are made from kinda tough popcorn, those timbers are looking reliable.



by:

Easy installation. Good quality.



by:

Easy to install. Works as advertised. Etrailer rocks!



by:

Installed this on my 2001 Explorer. Install is easy (assemble unit, bolt on in place of existing bump stop). Annoyed to find it doesn't fit. Specs are gap 1/2"-1-1/2"; there was a gap of 2-3/4". Yeah, they sell spacers for $27 each, but it's really annoying to buy a $225 product that says it fits your truck, only to find that you have to spend 50% more to actually adapt it to your truck!



by:

Very easy to install. I got the product in two days. Love etrailer products. THANKS.



by:

Very easy to install took about 30 minutes. If it manages the weight of my trailer I will be more impressed with your product.



by:

Install was a breeze, can't wait to tow our camper with these babies on the Tundra



by:

Fast shipping would definitely recommend



by:

Quick delivery and exactly as described!



by:

Very easy installation!



by:

Very poor packaging. The box is coming apart and USPS reinforced it. Found out this product doesn,t work on a 2018 Winnebago Intent. It will cost me almost $[XX] to return it.



by:

Shipping was fast, product looks to be well made.



by:

Customer service was great. Fast delivery. Very easy to install. 35 minutes it was done.



by:

Easy installation and perfect fit!



by:

Perfect fit for my 2024 Toyota Tundra rear suspension. I tow a trailer every weekend and after installing this rear suspension suppport upgrade, no more squat or swag on truck bed



by:

easy to install, Solved my trailer bouncing over bumps problem.



by:

Very quick delivery, earlier than I expected. Easy to install. Just what was needed for rear weight support when pulling a trailer.



by:

Great job. Will use etrailer again.



by:

Great product there leveled the load and made tow way better.

Thanks



by:

Got them a day ago and installed the next day. Super easy installation.



by:

What a great product. This has made a night and day difference pulling a 5th wheel.



by:

Really not sure it's doing anything. No noticeable difference when towing my camper.



by:

Part was reasonably priced and arrived early. Very happy with the process.



by:

Service is great and product appears to function as advertised. For what it is seems like product is priced a little high. I'd be very surprised if it costs more than $20 to make them.


25
3504
Show More Reviews

See what our Experts say about this Timbren Vehicle Suspension

  • Rear Suspension Enhancement for 1994 Chevy C/K with In-Bed Hitch
    We don't have any air bag suspension kits that fit your truck and are also compatible with in-bed hitches. We have other options that would thoug if you'd be interested?
    view full answer...
  • SuperSprings Suspension Enhancement for 2001 Coachmen Catalina Sport Class C Motorhome
    We have the SuperSpring kit part # SSA22 which is a fit for the rear axle of your 2000 Ford E-350 chassis motorhome as well as the part # SSF-106-47 for the front. You'll note that the rear axle is a SuperSpring and the front is a SumoSpring. We don't have a SumoSpring for the rear axle of you vehicle.
    view full answer...
  • Correct Timbren Kit Fit for a 2006 Chevy Silverado 3500
    The only Timbren kit that fits the 1500, 2500, and 3500 models of the 2006 Chevy Silverado pickups is the Kit # TGMRTT35S for severe service vehicles. Aside from that all of the other kits are model specific. For your 3500 you'll need the kit # TUR350 rated for 6,000 lbs or the kit # TGMRCK35S rated for 8,600 lbs. I recommend the 6K version if you tow or haul occasionally, but you'll want the 8.6K version if you're towing or hauling on a regular basis. Attached are some review videos...
    view full answer...
  • Recommended Suspension Enhancement To Fix Side-To-Side Movement With A 1996 Chevy P30 Chassis
    Unfortunately there currently isn't a steering stabilizer fit available for your 1996 Chevy P30 Chassis. I can completely understand where you're coming from with the poor ride quality in motorhomes having driving numerous models here so I do have some other recommendations for you. You can replace your front coil springs with the SuperCoils Custom Suspension Coils # SSC-11 to help stiffen up the suspension. From there you can install the Timbren Front Suspension Enhancement System #...
    view full answer...
  • Suspension Enhancement For A 2018 GMC Savana 3500 RWD Dually Box Van
    We do have a potential option for you, but the Air Lift LoadLifter 5000 # AL88205 is only going to fit vehicles with a fully boxed frame, so if your 2018 GMC Savanna 3500 is a van they are not going to fit. Since there is no air bag kit available, we recommend the Timbren Rear Suspension Enhancement System # TGMRG35. These are rubber jounce-style springs that will sit above the axle and help reduce sagging and absorb shock. The springs themselves have a 3,600 lb capacity and they are...
    view full answer...
  • Suspension Enhancement That Fits 2001 Dodge Ram 3500 that Has B and W Gooseneck Hitch
    I have a great suspension enhancement solution for your 2001 Dodge Ram 3500 that has a B and W Turnoverball gooseneck hitch # BWGNRK1394 installed but none of the air bag kits fit since the brackets interfere with the gooseneck hitch. So instead your best option is the Timbren kit part # TUR350 which fits your truck, gives you the same support as the air bag kits, and requires less maintenance since you install it once and it never needs to be monitored or adjusted. It's a much simpler...
    view full answer...
  • How Much Tire Clearance is Needed for Timbren Rear Suspension Enhancement
    The Timbren Rear Suspension Enhancement System item # TUR350 requires a minimum 5" space between where you mount the 4 1/2" x 4 1/2" bracket to your frame and axle pad. This allows the springs to have a 1" gap. The spring itself is 4" wide and the bracket is 4 1/2" wide and you will need a 1" gap to have clearance between your tires and frame. Depending on how low your frame is you will either need 5" or 5 1/2" of space.
    view full answer...
  • Suspension Enhancement for a 2010 Ford F-350 with 6 Inch Lift
    Since there are no 6 inch spacers to use with the Timbren springs # TUR350 using them on a truck with a 6 inch lift like your 2010 Ford F-350 would render the springs useless. There are other options though. You could use Firestone Ride-Rite Air Helper Springs # F2550 if your custom 5th wheel brackets have the hole in the center of them (above the centerline of the factory bump stops). Otherwise that hole will have to be drilled which is generally not an accepted practice because it voids...
    view full answer...
  • Availability of Air Helper Springs on a 2014 Ford F-350 Cap and Chassis 4X4
    We carry a couple different options for suspension enhancement for your 2014 Ford F-350 Cab and Chassis. Unfortunately, none of them are of the air spring variety. For your model, I recommend the Timbren Rear Enhancement System. Timbren offers two different weight capacities for the this vehicle. A standard duty model, # TUR350, and a heavy duty model, # TFR350TTCC. The standard duty springs,# TUR350, are rated up to 6,000 lbs and are of the jounce bump style. The Timbren system will...
    view full answer...
  • Recommended 5th Wheel Hitch and Rear Suspension Enhancements for a 1999 Ford F-350
    For a 5th wheel hitch compatible with your 1999 Ford F-350 I recommend going with the Demco Hijacker UMS Double Pivot 5th Wheel Trailer Hitch part # DM8550032 in addition to the Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches part # DM8551000. The Demco Hijacker is an excellent 5th wheel hitch rated for weight capacities up to 21,000 lbs. The rail free designed allows for full access to truck bed when the hitch is removed. The wraparound...
    view full answer...
  • Trailer Hitch Receiver For a 1985 Itasca Sunflyer On Chevy P30 Chassis
    I recommend looking at the Draw-Tite Ultra Frame Service Body Trailer Hitch Receiver # 41990-07. This is a universal receiver you can use as there currently is not a custom fit receiver for your 1985 Itasca Sunflyer on a Chevrolet P30 chassis. This particular receiver can be welded or bolted to the frame and uses 7" tall brackets. We do have the Draw-Tite Ultra Frame Service Body Trailer Hitch Receiver # 41990-16 that uses 16" long brackets depending on the amount of drop you need on the...
    view full answer...
  • Timbren Rear Suspension for 2006 Chevy Express Van
    It actually really depends on what type of bumpstops you have on your 2006 Chevy Express 3500. You can simply choose from the following: Van 3,600 lb Capacity - # TGMRG35 Motorhome 3,600 lb with 1-Bolt Bracket - # TGMRG30 Motorhome 6,000 lb with 1-Bolt Bracket - # TGMRG30LB Motorhome 6,000 lb with 2-Bolt Bracket - # TGMRG30PL The part # TUR350 that you mentioned is a universal kit which will fit but it isn't a custom fit like the other options so I recommend using one of the custom options...
    view full answer...
  • Suspension Enhancement Recommendation for 1999 Ford F-350 with Curt Gooseneck
    We have suspension enhancement that fits your 1999 Ford F-350 but none of the air bag kits will work since none of them will fit with an in-bed mounted fifth wheel rail kit. The most popular option will be the Timbren kit part # TUR350 which will work with the Curt hitch part # C60720.
    view full answer...
  • Timbren Suspension Enhancement For A 2007 Chevy 3500 4x4 Dually
    We do carry Timbren kits for the 2007 Chevy 3500 4x4 dually like the # TUR350. They are 6,000 lb capacity springs and they will help quite a bit to level your ride and reduce sagging. These are designed for trucks with stock suspension and can be made to fit lifted trucks. That said, the Timbren Kits will not work with vehicles that have been lowered. So if you plan to add the 2" shackle and lower the back end, you will limit your ability to add any kind of jounce style spring or other...
    view full answer...
  • Helper Spring Recommendation for 1996 GMC Sierra K2500 Carrying Truck Bed Camper
    When installed on an unloaded vehicle (no load in bed) there will be an approximately 1/2 to 1 inch gap between the Timbren Aeon spring and the axle tube. Once the bed is loaded with cargo or a slide-in camper, this gap will be taken up and the spring would be in direct contact with the axle tube. The Timbren # TUR350 you looked at isn't the correct fit for your 1996 K2500, you'll want to use # TGMRCK25 instead. The springs won't provide any lift, but will definitely provide up to 6000...
    view full answer...
  • Timbren Suspension Enhancement Recommendation for 2000 Chevy Express 3500 Van
    Timbrens do not make ride qualities softer unless the vehicle is bottoming out it's suspension. You said it's hard hitting so that makes me think that the suspension is bottom out and a Timbren would help give more support to prevent that. For that you would want the Timbren part # TUR350 for your 2000 Chevy Express 3500 van.
    view full answer...
  • Is There A Compatible Air Spring Kit For A 1992 Chevy P30 Class A Motorhome - 14,800lb GVWR
    Hi Robert, Both the Air Lift LoadLifter # AL88219 and # AL88203 unfortunately would not be a fit for your motorhome. The only compatible option for your motorhome's rear suspension would be the Timbren Rear Suspension Enhancement System # TUR350. This jounce spring has a 6,000lb load leveling capacity and can help absorb the rough road shock that you're experiencing.
    view full answer...
  • Timbren Suspension Enhancement FIt For 1995 Dodge Ram 3500
    We have the correct Timbrens for your 1995 Dodge Ram 3500, but the ones you mentioned are not a fit for your truck. Instead, the correct fit is the following: - Timbren Rear Suspension Enhancement System # TUR350
    view full answer...
  • Rear Suspension Enhancement for 1994 Chevy 1 Ton Dually
    We have a similar type of suspension enhancement kit that fits your 1994 Chevy 1 ton dually but SumoSprings doesn't have a fit for your truck. Instead we have the Timbren kit part # TUR350 which is a confirmed fit and can give you up to 6,000 lbs of suspension support.
    view full answer...
  • Air Bags and Spacers for a 1985 Dodge 1 Ton Prospector Truck w/ a 6 inch Lift
    Yes, we do have a suspension option that will work with the 6 inch lift you have on 1985 Dodge 1 Ton Prospector truck. It is the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers item # AL88215. These have a 5,000-lb weight capacity. The air bags reduce the strain on your rear suspension, increase safety, and compensate for uneven loads. They level your truck from front to back and adjust independently for side-to-side leveling of off-center loads. They also...
    view full answer...
  • Trailer Hitch Carrier With Ramp For 1978 Dodge Tradesman Class B Camper Van
    For your 78 Dodge Tradesman Camper Van I recommend Hollywood Racks Sport Rider SE2 Bike Rack w/ Cargo Carrier for 2 Bikes - 2" Hitch Item # HR1450Z-85 The carrier basket is 52-1/2" long x 15-9/16" wide x 6" deep and the total weight capacity with bikes is 220lbs If your generator and bikes are going to put you over that weight then I recommend the Reese 32x48 Cargo Carrier # PS10401-10402. The Van's suspension system is much better equipped to handle the strain than a trailer/RV so this...
    view full answer...
  • Recommended Suspension Enhancement for 1998 Dodge 3500 Dually with Flat Bed
    I can't give you the specific number of inches from the bed to the top of the tire, but I don't suggest having the flatbed lower than the top of the frame at the wheel well. To minimize squat and keep your wheels from impact with the flat bed, I recommend the Timbren Rear Suspension Enhancement System # TUR350. These springs will give you load support and minimize body roll. They will help your truck when under load from your 5th wheel or any other load.
    view full answer...

Do you have a question about this Vehicle Suspension?


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Robert C
Installed by:
Robert C
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Mary K
Updated by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Updated by:
Michael B
Employee Noah M
Updated by:
Noah M
Employee Carrie F
Updated by:
Carrie F
Employee Lincoln B
Updated by:
Lincoln B
Employee Jonathan Y
Video by:
Jonathan Y

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


<