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  1. Vehicle Suspension
  2. Timbren
  3. Bump Stops
  4. Towing/Load Leveling
  5. Front Axle Suspension Enhancement
  6. Standard Duty
FITS 2001 Ford Excursion
Timbren Front Suspension Enhancement System
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Timbren

Timbren Front Suspension Enhancement System

Part Number: TFF350SD4
In Stock
$269.36
Retail:$316.90
You Save: $47.54
Vehicle Suspension
Confirmed to Fit
2001 Ford Excursion

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etrailer Installation
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3,000-lb Capacity. Great for trucks with plows, these front hollow rubber springs help to stabilize and level your Ford Excursion. 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 TFF350SD4 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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2001 Ford Excursion - Timbren Front Suspension Enhancement System

Highlights

  • Designed to Fit Your 2001 Ford Excursion: Mounts to existing attachment points
  • 3,000-lb Front Support: Keeps the front end level and stable when carrying heavy gear or plows.
  • Better Steering and Braking: Prevents front sag so handling, traction, and headlights stay aligned.
  • Smoother Ride on Rough Roads: Rubber springs absorb shock to reduce bounce and harshness.
  • Reduces Roll in Turns: Each spring works independently to steady the truck when swerving or cornering.
  • No-Drill Install: Bolts in place of factory bump stops with included brackets and hardware.

Features to know about

Stay Level Under Front-End Weight: 3,000-lb Suspension Support

When heavy gear or equipment weighs down the front end, steering and braking can feel off. The Timbren Front Suspension Enhancement System adds up to 3,000 lbs of extra support so the vehicle stays level and stable under load. The hollow rubber springs work with the factory suspension to reduce sag and keep headlights properly aimed when carrying or using front-mounted equipment.

Truck with snowplow attached showing how Timbren front suspension enhancement supports heavy front loads and maintains level stance.

Before-and-after comparison showing reduced front-end sag on truck using Timbren suspension enhancement under heavy load.

Smooth Out Rough Roads: Hollow Rubber Springs Absorb Shock

Bumpy roads and uneven terrain can beat up your front suspension. These Aeon hollow rubber springs act like shock absorbers, taking the brunt of impacts before they reach the cab. They soak up road shock and cushion light loads for a smoother, more comfortable ride while helping extend the life of your factory suspension by preventing bottoming out on rough roads.

Truck driving on a rough road demonstrating Timbren suspension system absorbing shocks for a smoother, more stable ride.

Stay Steady in Turns and Off-Center Loads: Independent Spring Action

When cornering or carrying uneven weight, each Timbren spring works on its own to balance support from side to side. This independent action cuts down on body roll and sway so the vehicle feels planted in turns, when swerving, or with an off-center load. The setup helps maintain control and confidence even when your load is uneven or shifting.

Illustration showing how Timbren suspension system prevents sag, roll, sway, and squat for improved vehicle stability.

Easy Bolt-On Setup: No Drilling Required

Installing load support doesn’t need a full shop. The system replaces factory bump stops using custom-fit brackets and included hardware, all with a simple no-drill bolt-on design. Once mounted above the front axle, each spring stays in constant contact to provide continuous cushioning and support without needing compressors, airlines, or manual adjustments.

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 showing installation and function of Timbren hollow rubber springs in loaded versus unloaded conditions on truck axle.

Weight and Capacity

  • Capacity: 3,000 lbs
  • Weight Limit: Do not exceed the vehicle's weight-carrying capacity

Diagram of compressed Timbren rubber spring showing progressive folding design for increased resistance under heavy load.

Compatibility and Requirements

  • Designed to work with: A suspension system that is in good working order

Warranty

  • Warranty: Limited lifetime warranty - satisfaction guarantee

FF350SD4 - Front Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren



Ratings & Reviews

4.7

768 reviews
5 Stars
(614)
4 Stars
(109)
3 Stars
(15)
2 Stars
(6)
1 Star
(24)
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by:
2002 Ford Excursion
2002 Ford Excursion with a 7.3L diesel. The kit has excellent fit & finish. It was very simple, and straightforward to install as well. If you can put a nut on a bolt, and change a tire you can do this. The hardest part was the bolts on the drivers side due to the tight area between frame, suspension, and axle parts. The passenger side was very easy. These replace the factory bumpstops between the framerail, and axle. They have stopped the heavy engine from bottoming out the suspension when hitting severe bumps, and do so without making the ride anymore harsh than before. I definately recommend this product.
by:
2000 Ford F-250 Super Duty
Perfect fit great product
by:
2003 Ford Excursion
Easy to put on vehicle, have not hooked a trailer up yet, but clearance to pad is 1/2 to 3/4 inch which should be perfect.
Randy profile picture

Randy

10/13/2024

Have towed single and double axle trailer s several times and notice less sag, less sway, and better breaking. With balancing trailers I have a 1 12 of the trailer hitch. Which seems to be perfect for towing.

Randy profile picture

Randy

10/13/2024

great good better control, easier to tow single and double axle trailers.

by:
my '04 F250(Front), they were a direct swap for the factory bump stops and easily accessible. I installed them to help with a Western V-plow I installed. Don't even notice a drop when the plow is picked up. The Timbrens look to be a very simple and cost-effective way to manage extra weight on your truck.
by:
2001 Ford Excursion
I bought a 2001 Excursion 4X4 with 168000 miles. Of course it had expected wear/tear. The ride had a noticeable sway in turns and the suspension was too loose for my liking. I replaced the shocks and still saw little improvement. I then intstalled this Timbren SES and noticed an immediate difference. The sway is gone and the suspension is much better. It is a little stiffer of a ride, but very acceptable. I bought a 4X4 so that's what I expected anyway. Installation was simple and I didn't even have to remove the tires or shocks to install. Took less than 3 hours to install front and rear sets. I am pleased with the system so far.
by:
Installation was easy. Works great
by:
These work great, high recommend.
by:
Exactly what I needed!
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Great ordering, shipping time, cost, and supporting information. We added a snow plow and the product did everything as advertised.
Kate F. profile picture
Etrailer Expert

Kate F.

3/26/2026

Glad we had the right fit for you Tom! Where are you located, and how much snow did you get this last season?

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:
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..
Heather A. profile picture
Etrailer Expert

Heather A.

5/8/2026

I hear you, and that makes sense based on what you’re describing. If the Timbrens are in constant contact, they’re basically always engaged, which is why the front end feels so stiff instead of only firming up under load. You might actually be a really good candidate for SumoSprings part # SSF-281-47 (as long as your truck is a 2WD) They’re a similar concept but made from a softer, more progressive material, so they compress more gradually instead of feeling like a hard stop. That usually gives you support when you need it without taking away all the ride comfort like you’re experiencing now. Glad to hear the install went smoothly and the quality was there, that’s pretty typical with Timbren, it just comes down to how they behave on your specific setup. What were you mainly trying to improve up front, sag, handling, or just a smoother ride overall?

Jess profile picture

Jess

5/8/2026

@HeatherA I wanted to improve the ride. Im guessing there is sag i was unaware of. I expected the timbren to be a bit more progressive in it softness?? I didn't think the rubber would be in direct contact withe the spring 100% of the time. I only have 56,000 on this truck. So little use but 20 years old. Next weekend we take it for a 300 mile trip and ill determine if there going to be removed or not. Is there a return policy if satisfactory performance is not met?
by:
2017 Chevrolet Silverado 2500
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:
2006 Winnebago Sightseer Motorhome
For me surprisingly easy to install at 67 years old. Had immediate handling improvement and steering control.
Nick S. profile picture
Etrailer Expert

Nick S.

11/10/2025

That is great to hear! I am glad you were able to feel the difference right away. I am happy to hear that you were able to get them installed easily as well.

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:
1998 Chevrolet Blazer
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:
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
Brooke M. profile picture
Etrailer Expert

Brooke M.

7/9/2025

Happy to hear that, Dan! Thank you for sharing all the photos, too. What are you towing now that you have a some extra suspension support?

Dan G. profile picture

Dan G.

7/9/2025

We tow either a Honda Pilot or SantaFe on a tow dolly
Brooke M. profile picture
Etrailer Expert

Brooke M.

7/11/2025

@DanG Ooo nice! Been on any trips recently?
by:
2023 Ford Transit Connect
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:
2022 Ford E-Series Cutaway
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:
I watched installation videos for my FFF 53 Timbren suspension parts three times to familiarize myself with what I was going to be doing. This did help. I would say you need a little bit of experience in working on cars or trucks. This is a straightforward job with no fabricating needed. The hardware was correct. The instructions were correct. The parts fit great. I did this installation by myself. Another set of hands wouldn’t hurt but not necessary. If you’re on the fence on buying parts from Timbren, I would say go ahead and place your order.
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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...
  • Timbren Front Suspension Enhancement That Fits 2WD and 4WD 2003 Ford Excursion
    Yes, you are on the money with the fits. The Timbren Front Suspension Enhancement System # TFF350SD2 is a fit for the 2-wheel drive model of the 2003 Ford Excursion, while the Timbren Front Suspension Enhancement System # TFF350SD4 is a fit for the 4-wheel drive model of '03 Excursion. I have added a link to a video review of this suspension enhancement for you to check out. I do want to add that if you were looking for the rear suspension units from Timbren for your Excursion, they...
    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...
  • Timbren Suspension Enhancement For 2001 Ford Excursion
    The Timbren Suspension Enhancement, part # TFF350SD4, is intended to assist the front suspension you have on your 2001 Ford Excursion. This kit is for 4-wheel vehicles. Suspension enhancement is intended to be used on vehicles with suspension that is in good working condition. It is not intended to be used as a replacement for your suspension. I pulled one of these from our warehouse and took a couple of measurements. The spring measures 3-3/4 inches and the plate it is attached to measures...
    view full answer...
  • Timbren Suspension Enhancement for the Front and Rear of a 2001 Ford Excursion 4x4 7.3L Diesel
    The Timbren Rear Suspension Enhancement System, item # TFREXC4, is only the rear kit for your 2001 Excursion 4x4. For the front suspension you will need the Timbren Front Suspension Enhancement System, item # TFF350SD4. These front suspension helpers will definitely help with the large 7.3L motor in your Excursion. Both of these kits will require the removal of the original bump stop but will not require shock or spring removal and do not require any modifications to the original chassis....
    view full answer...
  • Suspension Upgrades for 2004 Ford F-250 4x4 with Air Bags, Overload Springs, and Anti-Sway Bar
    The first thing you are going to want to do is make sure that the truck payload capacity is high enough for your 3,500 pound camper. Adding suspension enhancement does not increase the capacity of the truck. It sounds like you have just about everything that you could use to enhance the suspension. Beyond that, all the components that you added to the rear suspension could be putting extra stress on the front. You could upgrade the front coil springs using # SSC-31. Or add some jounce-style...
    view full answer...
  • How Much Clearance for Timbren Front SES for 2004 Ford F-350
    The Timbren # TFF350SD4 are approximately 3.75" tall. Ideally you want a 1" gap after installation. If it is a little less that is fine they will just engage sooner.
    view full answer...
  • Timbren Front Axle Jounce Spring Kit for 2002 Ford Excursion 4X4
    The Timbren front-axle jounce spring kit that fits your 2002 Ford Excursion 4X4, part # TFF350SD4, installs in place of the vehicle's factory bump stops so their installation should be totally unaffected by the Bilsteins. The kit is a no-drill bolt-on installation that uses included custom brackets and hardware.
    view full answer...
  • Will the Timbren Front Suspension Enhancement System Fit a Lifted 2004 Ford F-250
    Yes, you should be able to install the Timbren Front Suspension Enhancement System part # TFF350SD4 on your 2004 Ford F-250 with Old Man Emu ARB Leaf Springs. However, if the distance between the bottom of the frame and top of the leaf spring pack has changed which I can only assume it has then you will need spacers to fill the gap until you have around 1/2" - 1" from the bottom of the Timbren and top of the leaf spring pack. The Timbren spring and bracket will measure 4" tall therefore...
    view full answer...
  • Recommended Suspension Enhancement for a 2004 4x4 Ford F-250 Super Duty 4-door Short Bed
    Yes, the Timbren suspension enhancement hollow rubber springs will help stabilize and level your 2004 Ford F-250 Super Duty as well as improve roll stability side to side. The added perk is they are easy to install and require no maintenance. For your 4 wheel drive model the recommended kit for the rear axle is # TFR250SDE (no snow plow equipment). The kit designed for the front axle is # TFF350SD4. I have linked an installation video of the rear kit being installed on a similar vehicle...
    view full answer...

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Info for this part was:

Employee Jacob T
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