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  1. Vehicle Suspension
  2. Timbren
  3. Bump Stops
  4. Towing/Load Leveling
  5. Front Axle Suspension Enhancement
  6. Standard Duty
THIS ITEM IS NOT A FIT FOR
2006 Nissan Altima
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Timbren

Timbren Front Suspension Enhancement System

Part Number: TFF350SD4B
In Stock
$269.36
Retail:$316.90
You Save: $47.54
Vehicle Suspension
Not Confirmed to Fit

2006 Nissan Altima

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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
3,600-lb Capacity. Great for trucks with plows, these front hollow rubber springs help to 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 Front Suspension Enhancement System part number TFF350SD4B can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (764)
  • Q & A (0)
  • Videos (1)
  • Photos

Timbren Vehicle Suspension - TFF350SD4B

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • 3,600-lb Front Load Support: Keeps your truck level and steady when carrying heavy front gear.
  • Smoother Ride on Rough Roads: Rubber springs absorb road shock for a more stable drive.
  • Better Steering and Braking: Prevents front-end sag so handling and headlight aim stay consistent.
  • Handles Off-Center Loads: Each spring works independently to balance uneven weight and reduce roll.
  • Simple No-Drill Install: Bolts in place using included brackets and hardware for quick setup.

Features to know about

Stay Level Up Front: 3,600-lb Front Suspension Support

Heavy equipment like a plow or front-end load can make the nose of your truck dip and throw off steering and braking. The Timbren Front Suspension Enhancement System adds up to 3,600 lbs of front axle support to keep your ride level and controlled. The hollow rubber springs mount in place of the factory bump stops and work with your suspension to resist sag, keeping your headlights aimed right and your tires planted on the road.

Truck with front-mounted snowplow illustrating need for Timbren suspension enhancement for level support

Truck with loaded bed showing reduced front-end sag using Timbren suspension enhancement system

Smooth Out the Rough Stuff: Hollow Rubber Spring Cushioning

Rough roads and uneven pavement don’t have to beat you up. These Aeon hollow rubber springs act like cushions that absorb road shock before it reaches the cab. They take the brunt of bumps and potholes, softening the ride while protecting your factory suspension from bottoming out. Whether you’re carrying gear or running empty, the rubber design helps make every mile smoother.

Truck on a bumpy road illustrating lack of shock absorption without Timbren suspension enhancement system

Hold Steady Through Corners: Independent Side-to-Side Action

Sharp turns, swerves, or off-center loads can cause unwanted lean. Each Timbren spring works independently, supporting its own side when needed to cut body roll and keep you steady through corners. Even if one side of your truck is carrying more weight, both sides stay controlled so you feel stable and confident behind the wheel.

Timbren suspension system preventing vehicle body roll and sway during turns or uneven loads

Install It and Go: Bolt-On Brackets with No Drilling

Getting real load support doesn’t have to be complicated. This kit includes two Aeon hollow rubber springs with vehicle-specific brackets and hardware that bolt onto the frame above the front axle—no drilling required. Once mounted, the springs are always in contact with the axle, automatically adjusting stiffness as weight increases for hands-off load leveling every time you hook up equipment or haul a heavy load.

Specs

Included Components

  • Includes: 2 Aeon hollow rubber springs, vehicle-specific brackets and hardware for simple installation
  • Replaces: axle bump stops on frame

Installation

  • Drilling: No drilling required

Diagram comparing vehicle suspension with and without Timbren hollow rubber springs installed above axle

Weight and Capacity

  • Capacity: 3,600 lbs

Compatibility and Requirements

  • Vehicle requirement: Designed to work with a suspension system that is in good working order

Warranty

  • Warranty: Limited lifetime warranty - satisfaction guarantee

Illustration showing progressive compression of Timbren hollow rubber spring under load

FF350SD4B - Front Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TFF350SD4B Installation instructions

This Product Fits The Following Vehicles




Video of Timbren Front Suspension Enhancement System
Video Thumbnail Video Player Dialog

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for A Closer Look at the Timbren Front Suspension Enhancement System-T44FR

Hi everyone. Aiden here with etrailer. Today we're gonna be taking a look at the Timbren Front Suspension Enhancement System. This is going to be an upgraded bump stop for the front end of your vehicle, whether it be a car like the 4Runner here or a motor home. These are gonna come in a variety of different kits and fits with different capacities and help stabilize the front end of your vehicle. Let's check it out.

So why would you be looking for something on the front end of the suspension enhancement side A lot of people are pretty familiar with airbags on the rear axle, and a lot of those suspension enhancement components are used in towing applications or maybe truck beds where you've got really heavy loads in the bed and you need extra support at the back of the vehicle. Now what the front end can do is stabilize that front end, if you do have something like a front mounted hitch, maybe a plow on a truck, or on a larger vehicle or even a smaller vehicle like this, it does help stabilize body roll a lot because these are going to be a lot beefier than the factory suspension and the factory bump stops, that is, and help limit that side to side movement as we're taking turns or driving down in like really windy conditions on the highway. So this will give a significant upgrade for those applications. As far as the construction for these goes it's going to be a hollow Aeon rubber material with a progressive spring rate. Now, what the progressive spring rate means is the more this compresses, the more pressure it has, the more it's going to work at returning the vehicle to its natural position.

So it's just going to resist more and more as it gets further compressed. As for the installation process, this particular one that I've been holding is for the 4Runner, and this one is a very basic kit. It really just has a threaded end with a bolt and a plate on the inside, but this just spreads into a factory weld done on the 4Runner. Very straightforward install. But for all the other different fits and kits, those are gonna have custom brackets and their own hardware that come with it.

So no matter what one you end up going with, if it's a fit for your vehicle, it's going to be custom fit. So the installation should be just a straightforward bolt on process. Now obviously that can vary depending on the kit and what vehicle you're putting it on, especially on the motor home side of things. But for the most part, you should be able to have a very straightforward install process with any of these kits you pick out. And to make sure you find the right kit for you, be sure to enter your vehicle information into our fit guide and use that to narrow down for the custom fit options available for your vehicle.

If you're considering some front suspension enhancement, I do think that these bump stops from Timbren are a really solid option. From the testing we did in installation on our 4Runner, they performed great. They reduced a ton of the body roll and really helped when we're going over speed bumps and just aggressive driving conditions where we need that extra support. Whether you've got a truck with a plow on it, or a motor home that you're trying to reduce body roll on, something like this can be be a huge help and it's a very straightforward solution. But that'll do it for a look at the Timbren Front Suspension Enhancement System Bump Stops. Thanks for watching.

Ratings & Reviews

4.7

763 reviews
Review sort icon
3,600-lb Capacity. Great for trucks with plows, these front hollow rubber springs help to 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:

The bump stoppers are solid and the directions for installation were clear, even for DIY. The Ford F53 chassis for the Entegra Emblem is challenging to navigate. We found two sets of hands worked best. And installing the bolt from the top of the frame with the washer and nut below worked best.



by:

The Timbrens take the bottoming out of the suspension away on rough roads. Also takes some of the sway away. Pretty easy to install.



by:

I like using Etrailer because i can call and talk to a person. These front ones went in pretty easy just like directions said. and they got rid of the bad bumping sound in my front end after hitting a bump. smoothed things right out.



by:

A+++ Excellent product and customer service. Bought both front and rear suspension enhancements and worth it. Highly recommend.



by:

I have a very heavy "Cattle Guard" on the front of my RAM 3500 and this combined with the heavy 4WD and diesel engine the extra support from the Timbren Front Suspension Enhancement System definitely keeps the front suspension from bottoming out.



by:

Installation was not too hard, Install Videos explain all steps in great detail. BumpStops arrived in excellent condition and was delivered in a timely manner



by:

I installed Timbren’s front and rear on my 2020 F53 chassis motorhome. They are by far the best suspension upgrade I have done. I had previously installed Super Steer Trac Bar, Radius Rods and Safe-T-Plus, which had helped, but not as much as I had hoped. The Timbren’s finalized the package and it drives good now.



by:

Easy install, didn't even need the brackets for my application. Really helped with sidesway in the wind and seems to help the front from dipping with extra weight. Haven't tried plowing snow yet but I think they will make a major difference



by:

The timbrens actually did what they were suppose to do. However, once I starter driving out west I notice the timbrens were riding on the axle which cause the speedometer to jump around depending on the road. I would recommend them if you are hauling or towing a camper or RV. I was going to contact etrailer about maybe removing a spacer for one set however the other set came as one unit. The bottom line is the Timbrens does stabilize your load for safe travels. I will be contacting etrailer soon to assist in correcting the problem...Road trip from Idaho,Colorado,Wyoming,and Utah were beautiful... Thank you etrailer



by:

For me surprisingly easy to install at 67 years old. Had immediate handling improvement and steering control.



by:

Ok it’s been a year since I’ve had the springs and I’m impressed. With how easy the install is and what you get out of it these are truly amazing. No more “squishy” feeling when towing my 22fy travel trailer. The ride is a little bumpy but I don’t care. I’m glad I found these.



by:

I had a problem with getting front sumo springs relative to the rear sumo springs I purchased earlier; however, the staff at etrailer were very helpful in getting me a suspension enhancement component made by timbren which I just installed. I believe the timbren supports are going to do the job I was looking for and make me just as happy as I am with the rear sumo springs. You will notice from the photos the supports make direct contact; however, the pictures were taken on a unlevel surface and when the truck is on a level surface the direct contact is equal on either side. Also, the timbren supports provide substantially more weight capacity in the event I choose to haul my scooter on the front end of the truck. Thanks again Derek S and etrailer staff I am very pleased with the service, customer relations and professionalism experienced when ordering my parts. Thank you, Bobby (Louisiana).



by:

Have them on several trucks now and couldn't imagine running snow plows without anymore.



by:

The front Timbren are working very good.The rear not so good



by:

I would say that the product is a bit pricey for what it contains. The secondary bolts came with the wrong sized nuts. Other than that, they work well to support the suspension.



by:

Install was straightforward. Hardest part was getting the old bump stops out. Sway was greatly reduced on the Interstate and the rock and roll by passing semis was greatly reduced. Wish I had bought these sooner!



by:

These bumpstops really work, they stop the front end vibration before it travels through the shocks and springs, for a smooth ride



by:

Pretty pricey but well worth it. Put these all the way around at the same time as new rear leaf springs on our c7500 topkick and it made a huge difference. It's a top heavy bucket truck and it would rock and roll just turning a corner to the point it was downright scary. Now thats greatly reduced. They also smoothed out the ride especially when loaded more than I expected.
Install was simple, perfect fit. Worst part was grinding out the rivet on the old bracket



by:

I haven/t installed them yet. I think I should have gotten a discount for the age of the "box"s the Timbrens were in. May be a credit ,, Brad



by:

Super simple installation that took about 20 minutes. These made a HUGE improvement on steering control and bounce. Driving on the freeway is a breeze. I highly recommend this product.



by:

It good but one side with no bump had to be put spacer but the spacer was flat so the bolt did not have a lot of thread so I grind the spacer a bit so it could stay flush otherwise this might solve the problem of outter tire wear that ford transit has will find out soon



by:

I love these things. They are worth the upfront expense. I have them on two ¾'s, one ½, and a minivan for road trips. This particular set is full-time active up front. I have a 2" leveling kit and I'm in em no matter what. Zero complaints though. Solid performance through all aspects. I don't run any front-end attachments.



by:

I have a 2006 Kodiak 2 wheel drive. Timbrin firmed up the front end to much. There in full contact with the spring. I think it to stuff and I might be removing them. The install was straight forward. Parts are as expected and quality of Timbrin is great. Just not enough cush..



by:

Great ordering, shipping time, cost, and supporting information. We added a snow plow and the product did everything as advertised.



by:

WORKS PERFECT!!!!

Leo W. profile picture

Leo W.

2/23/2018

GREAT


25
25

See what our Experts say about this Timbren Vehicle Suspension

  • Recommended Front Timbrens for a 2001 Ford F-350
    Hey Thomas. I wouldn't say ones better than the other and they have identical installation processes as far as removing the shock tower assembly. It has to come off for both on your truck. The main differences between the Timbren item # TFF350SD4 and the item # TFF350SD4B is a higher capacity, and one is designed for the 2001 Ford F-350's that have the Ford Snow Plow Prep Pkg. The Timbren item # TFF350SD4 has a 3,000 lbs capacity and is what you'll need if your F-350 does not have the...
    view full answer...
  • How Tall Is The Timbren TFF350SD4B Once Fully Assembled
    I had the Timbren Front Suspension Enhancement System # TFF350SD4B measured and it will be 6-5/8 inches from the top of the bracket to the bottom of the jounce. This is also designed to fit a 1999 to 2004 Ford F-250, F-350, and F-350 Cab and Chassis.
    view full answer...
  • Front Axle Air Spring Kit for Lifted 2004 Ford F-250 4WD
    Timbren front axle kits # TFF350SD4 and # TFF350SD4B that fit the stock 2004 F-250 4WD are both considered standard capacity but part # TFF350SD4B does have slightly taller and stiffer springs. Otherwise they are essentially identical no-drill replacement bump stops. But neither of these can work on your truck with 6-inch lift. No Timbren front axle kits are safe to use on a truck with 6-inches of suspension lift. I did call Timbren to confirm this is the case. It may be possible to install...
    view full answer...
  • Installing a Timbren Front Suspension Enhancement System on a 2009 F-150 4X4 With a 2 Inch Lift
    To use the Timbren Front Suspension Enhancement System, item # TFF150F, on the front suspension of a vehicle that is lifted with a suspension lift you will have to use a kit modified for your truck. You can call the etrailer.com Customer Service department with the following information at hand. Year, make, and model of your vehicle Whether it is 2-wheel or 4-wheel drive Measurement from the top axle to the bottom of the frame directly above the axle If you are using a body lift kit then...
    view full answer...

Do you have a question about this Vehicle Suspension?


Info for this part was:

Employee Robert G
Expert Research:
Robert G
Employee Jacob T
Video Edited:
Jacob T
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 John S
Video by:
John S
Employee Robert C
Installed by:
Robert C
Employee Aidan B
Installed by:
Aidan B

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