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  1. Vehicle Suspension
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  3. Bump Stops
  4. Towing/Load Leveling
  5. Extra Heavy Duty
  6. Rear Axle Suspension Enhancement
THIS ITEM IS NOT A FIT FOR
2008 Keystone Outback Travel Trailer
Timbren

Timbren Rear Suspension Enhancement System

Part Number: TFR350CC
In Stock
$398.07
Retail:$468.32
You Save: $70.25
Vehicle Suspension
Not Confirmed to Fit

2008 Keystone Outback Travel Trailer

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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. Great Prices for the best vehicle suspension from Timbren. Timbren Rear Suspension Enhancement System part number TFR350CC can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension - TFR350CC

  • 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 Aeon hollow rubber springs, vehicle-specific brackets and hardware for simple installation
    • Replaces axle bump stops on frame
    • No drilling required
  • 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.



FR350CC - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TFR350CC 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 Manufacturer Spotlight - Suspension Enhancement

Hey guys, it's Jake here with etrailer. Today we've got John with us from Timbren. He's gonna tell us a little bit more about what separates Timbren from the competitors. I appreciate it, I'm glad to be here. Timbren is a suspension specialist. We're based in Whitby, Ontario, so we are a true manufacturer in Canada and we offer a wide range of suspension products from light duty, from commercial all the way up to Overlander, Sprinter applications and trailers.

Now we've talked about a few of the options you guys have and we have plenty of options on our website. Right. We've got the SES kits. We've got the axle-less suspension. Right.

We've got your new coil inserts that just came out recently. But what would you say is your bread-and-butter at Timbren Yeah, no, our SES, suspension enhancement system, is definitely our bread-and-butter. Came out in 2011, won a SEMA New Product Award for best truck suspension. And really, the evolution you just mentioned here, you know, starting in 1968 all the way through now, 2024. But the SES kits are really the core of who we are.

And if you, if you would say at, in the level of stiffness on the market, what would you, would you put yourself in more in a heavy duty side for the SES kits or is it more of a lighter duty Yeah, great question. Lighter duty, we certainly can have a product for commercial and heavy duty, but in '82 when SES was introduced, it was purposely introduced for that, that light duty market. So we start with 1500 and again, go all the way up, but by far really popular with that 1500, 2500 crowd. That kinda leads me into my next question. So we talked about, your specialty is kind of in the lighter duty, but do you have an option for the heavier duty for your sprinter vans and maybe for your truck bed campers Yeah, absolutely.

We do have SES kits for truck beds, truck campers with a higher center of gravity. That creates a new kind of set of problems with the sway side to side. So we have severe duty kits for those. And it uses a single convoluted AON versus a double convoluted to tackle that problem of side to side. And the same thing with the sprinter van. It uses a rectangular shape Aon, but it's there to do the same deal that side to side sway because they're so top heavy, it'll eliminate that. Okay. And then we've had an instance here at etrailer that we had a van that was very, very heavy on the one side. Is there anything that you guys can do personally to help, I would say, I guess customize that kit for that particular user Yeah, by all means we would want that individual to contact us. We would ask a couple questions, see where that weight is distributed and we can actually produce an AON with either a stiffer hardness or durometer or a softer durometer and that will help level it out. So yes, we can take care of that for 'em. And I think that'll really, really help people to get their rigs dialed in because who knows what they're putting in the campers afterwards, after they buy 'em. They come from the manufacturer already heavy on that side and they're trying to load stuff on the other side to try to even it out. But knowing that there's a solution that you can customize for your rig no matter what the weight is on either side is really, really cool. Yeah, absolutely. We're happy to take care of 'em and again, there's no charge for that. Awesome. Now to kind of wrap things up, what sets Timbren apart from a lot of other manufacturers out there Well, I think there's a couple things. We're a family run company and our longevity, you can't deny, 1968 to 2024 and our warranty, we have a lifetime warranty regardless of how old it is. We will take care of it, replace it, limited lifetime warranty, and the hundred day money back guarantee. Very cool. And that's whether or not you're the first owner Right. And yeah, we're not asking for receipt, who'd you buy it from It'll be taken care of. Just give us a ring and we'll take care of it for you. Very cool. Well thank you again for meeting with us. Appreciate it. It was a pleasure to work with you. Thank you.

Customer Satisfaction Score:

Ratings & Reviews

4.7

3506 reviews
5 Stars
(2790)
4 Stars
(456)
3 Stars
(112)
2 Stars
(67)
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:

Easy installation and perfect fit!



by:

nice ride with my 5th wheel



by:

Great service and quick shipping



by:

Got them in yesterday took about 30 minutes to install hook up my travel trailer it help a lot I'm very please. Troy



by:

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



by:

Always great experience.



by:

Product does not help rear swag with fifth wheel camper but a half inch. On brand new truck as well. Not happy with product. Called to return them and want me to pay 27.00 shipping and stated in email that was sent to me I couldn’t return if installed. I’m not understanding this ? Do not buy ! I won’t be doing any more business with etrailer . Not helpful at all



by:

Just installed on 2008 Hyundai Entorouge seems to work well. Only problem was that I had buy new hardware because the supplied hardware was standard not metric.



by:

Works like expected. Keeps the truck looking level even under heavy loads.



by:

I recently purchased a 2024 tundra hybrid platinum. With this being the luxury addition the rear suspension is lacking when in comes to towing when I would hook to my 7x16 enclosed trailer my truck really saved.
I purchased and installed the timbren ses stops and no more sag. The ride of my truck remains smooth when unloaded and the timbrens also stopef the side to side rocking. Will post another after I tow a few times.



by:

Installed in about 15 minutes,very easy.I pick up my new truck camper next week so I do not know how it works yet,but looks like it will work like its suppose too



by:

I received my order within days. It was exactly as I expected. The product works as advertised. I am a now a lifelong customer of etrailer.com.



by:

Very easy to install, well made product but the instructions are minimal.



by:

Yes about one year ago i installed this product with excellent results so far.



by:

Simple installation and the cost is gre at.



by:

Very efficient and great to work with. Will definitely use your company again. Thanks



by:

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.



by:

Just as overtired , they stiffened up the ride , plus no more sag in rear ended of truck .



by:

Just what my truck needed to stop the sag when I hook up to my 5th wheel.



by:

Just received them just install them looks like they work great etrailer is always right on spot



by:

Fast delivery and easy installation



by:

Product arrived and installed as advertised. Great Shipping



by:

Easy to install and does not affect the ride till you have a load, then they help support the load. Good product!



by:

As always amazing customer service and products to match.



by:

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


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See what our Experts say about this Timbren Vehicle Suspension

  • Fit of Timbren TFR350CC Rear Suspension Helper Spring on 2011 Ford F-350 Cab/Chassis Truck
    The Timbren # TFR350CC is a fit for a 2011 Ford F-350 Cab/Chassis Truck, as confirmed by Timbren. Measured from the bottom of the rubber Aeon spring to the top of the mounting bracket (see photo), the spring is 7-5/8 inches tall. You can see a product video by clicking the provided link.
    view full answer...
    Image 1 for
  • Suspension Enhancement for a 2012 Ford F-350 Cab and Chassis with 4-Wheel Drive
    I checked with Firestone and there are no air bag kits that fit the 2012 Ford F-350 cab and chassis models with 4 wheel drive but we do have other options. If your truck is going to be used as a service vehicle such as an ambulance or utility vehicle then I recommend the 8600 pound capacity Timbren springs # TFR350TTCC. For non-service vehicles you can use the 6k rated springs # TFR350CC. The great thing about these springs is that you will not have to add and remove air all the time....
    view full answer...
  • Are There Air Bags for a 2016 Ford F-350 Cab and Chassis
    I do have an option for you but there aren't any confirmed fit air bag options for a 2016 Ford F-350 Cab and Chassis. The only options we have are upgraded jounce springs. The most popular of which and what I recommend using is the Timbren Rear Suspension Enhancement System part # TFR350CC. These offer a bolt-on install and will work great to provide extra support when towing or hauling.
    view full answer...
  • Rrecommended Rear Suspension Enhancement For a 2011 Ford F-350 Cab and Chassis With Utility Bed
    I recommend the Timbren Rear Suspension Enhancement System # TFR350CC for your 2011 Ford F-350 cab and chassis frame. I checked with both Firestone and Air Lift and they both told me that they do not have an air bag set that is confirmed to fit with your vehicle. The Timbren system is designed to assist your F-350's rear suspension with a weight capacity up to 6,000lbs. This will help to reduce rear end sag as well as provide additional stability while turning with heavy loads. You will...
    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 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 Carrie F
Updated by:
Carrie F
Employee Lincoln B
Updated by:
Lincoln B
Employee Jonathan Y
Video by:
Jonathan Y
Employee Robert C
Installed by:
Robert C

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