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Timbren SES Bump Stop | Rear | 6,000 lbs. Capacity


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Timbren kit FR1504E fits rear applications for the 2WD-4WD Ford F-150 truck. Timbren springs deliver both good ride quality and improved load handling without affecting your ride when unloaded. They reduce sway, improve roll stability, cushion road shock and improve the handling of your vehicle when hauling a heavy load or towing a trailer. Timbren kits are easy to install, are maintenance free and come with a lifetime warranty. 6,000 lbs. capacity per pair.

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Product Specs for Timbren FR1504E

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Timbren FR1504E Details

Timbren Kits - Overview

Timbren Suspension Enhancement Systems work in conjunction with the existing suspension, to improve your ride and to protect the vehicle against the effects of overloading.

Hollow Timbren rubber springs are mounted between the truck frame and the axle. They do not take the place of the existing leaf spring, but work in conjunction with it, acting as a bump stop, to improve the ride of your truck and to protect springs against overloading.

Timbren Ride Control products enhance a vehicle's empty ride quality, while providing protection against overloading, road shock, bottoming out, sway and broken springs. Timbren Front axle kits prevent front end nose diving. Together, these features provide a smooth, level ride, even with heavy loads.

Timbren suspension kits offer the following benefits:

  • Helps eliminate spring sag and improves stability
  • Maintenance and trouble free - No air lines
  • No special tools or skills are required to install your Timbren kit
  • Requires no alteration to your present suspension - Uses existing holes in frame
  • Each kit is complete with all the necessary parts & instructions for easy installation.
    Please note, your kit contents may vary depending on application.
  • Timbren products have added stability to trucks, vans and RVs for over 40 years
  • Used by municipal & state highway departments throughout the U.S.
  • Improves your vehicle's ride and protects against the effects of overloading
  • Lifetime guarantee

Typical Uses for Timbren Kits


Timbren excels in the wrecker industry with the use of the Timbren suspension enhancement system. From a ¾ ton truck with a sneaker unit, to a full size class 8 wrecker, Timbren’s muscle provides the capacity needed to haul anything. Our compact severe service package allows drivers to maintain a safe even ride without the front of the vehicle pointing to the sky. By shifting the weight to the front axle and maintaining a level ride, a Timbren Kit will keep you moving, and you will never again have to leave a potential tow at the side of the road!

timbren for towing

Snow Removal Equipment

Whether you use a pickup to clear a small driveway or a class 8 highway truck with a wing blade, Timbren Industries has a suspension enhancement system designed to provide a safe and level ride for plowing snow in the toughest of environments. These high performance suspension kits are spec’d on most state, county and provincial transport equipment for snow plowing. Many snowplows are also equipped with very high center of gravity salt spreaders carrying heavy loads that induce sway. The rear Timbren Kit will improve roll stiffness and absorb road shock.

Towing trailers

Whether you are towing a horse trailer, RV or full size 54 foot highway trailer, a Timbren overload booster kit installed on your tow vehicle will provide you with peace of mind because you’ll know that your suspension can handle the extra stress. The enjoyment of a safe, stable ride without the expected sag from the weight of the trailer makes the addition of the Timbren suspension enhancement system an easy decision to make.

timbren for towing trailers


Remember the last time you were driving ‘white knuckled’ through the mountains, wondering if your RV and tow vehicle were going to make it through the next hairpin turn? Rest easy with the Timbren suspension enhancement system on your vehicle. Not only will this product improve roll stability and reduce sway on top heavy loads, it will also improve vehicle dynamics and high speed maneuverability without comprising ride quality. Timbren’s suspension enhancement system provides peace of mind for users of vans, pickups, SUV’s, Class A, B, C recreational vehicles.

Emergency Vehicles

Emergency vehicles often need an improvement in vehicle dynamics and high speed maneuverability without compromising ride quality. Timbren’s suspension enhancement system provides excellent stability while offering a smooth ride with any loading condition. Ambulances, fire trucks, and service vehicles all benefit from the extra safety and capacity provided by a set of Timbrens.


From hauling hay through a field, to high load off road applications, the Timbren suspension enhancement system will protect your suspension, and will improve the performance of your vehicle whether it’s a pickup, medium duty straight truck, or a full size class 8 truck. For leaf spring, torsion bar, air ride and other types of suspensions the suspension enhancement system provides stability, maintains ride height, and improves the vehicle dynamics for both on and off road applications. Timbren also provides custom applications for other agricultural equipment including bailers and sprayers.

Timbren Kits Solve the following Suspension Problems

Suspension Sag:

Heavy loads cause the front or rear suspension to deflect lower than desired. Powerful, durable hollow rubber cushions help carry the heaviest loads easily. Road shock is absorbed, reducing wear and tear on suspensions. The Timbren load booster acts as bump stop, to eliminate bottoming out on bumps.

Trailer Sway

Eliminate wallowing along the highway, drifting in crosswinds or when passing heavy trucks. For more driver and passenger comfort, Timbren suspension enhancement systems sense vehicle body movement and automatically increase roll stability.

Body Roll

If your vehicle leans on corners or curves, progressive rate Timbren suspension kits can improve weight distribution to all 4 corners of the vehicle. This helps keep the vehicle level, improves steering and reduces brake and tire wear.

Rough Ride

You feel every bump in the road and every expansion joint. Rubber bump stops in each Timbren kit are designed to soak up road shock and bumps. The result is a smooth stable rubber cushion ride.

Vehicle Application Guide for Timbren FR1504E

The FR1504E Timbren SES Bump Stop | Rear | 6,000 lbs. Capacity is engineered to work with specific vehicles displayed below. Can't find your vehicle, or need assistance, please give us a call at 1-800-358-4751 or 1-989-755-0561. Browse the category Timbren SES Bump Stops to view all vehicle makes and models.

YearMakeModelVehicle OptionInstallation Notes
2015 Ford F-150Fits 4 Wheel Drive; Fits 2 Wheel Drive
2016 Ford F-150Fits 4 Wheel Drive; Fits 2 Wheel Drive
2017 Ford F-150Fits 2 Wheel Drive; Fits 4 Wheel Drive
2018 Ford F-150Fits 2 Wheel Drive; Fits 4 Wheel Drive
2019 Ford F-150Fits 4 Wheel Drive; Fits 2 Wheel Drive
2020 Ford F-150Fits 4 Wheel Drive; Fits 2 Wheel Drive
2021 Ford F-150Fits 4 Wheel Drive; Fits 2 Wheel Drive
2022 Ford F-150Fits 4 Wheel Drive; Fits 2 Wheel Drive

Customer Q&A - Timbren FR1504E

Will the timbern kit for my 2013 F150 4WD rears fit my 2015 F150 4WDRears?

Timbren kit FR1504D fits the 2013 F-150 4wd. The 2015 F-150 4wd uses a different Timbren kit, part FR1504E. The kits are different and the 2013 will not work on the 2015.

Timbren has been producing quality ride control products and suspensions since 1968. Utilizing the latest technology, Timbren uses computer-assisted design and manufacturing processes to produce quality ride control products for today's light, medium and heavy duty truck, trailer, and suv markets.

ISO 9001 Registration - Quality in action. Timbren's quality system has been judged to meet or exceed the requirements of ISO 9001:2000 following an independent assessment conducted by auditors from BSI. These ISO standards ensure that you will always receive quality products from Timbren.

Timbrens core product, the Aeon® Hollow Rubber Spring, is world-renowned for an efficient, reliable suspension system. Many manufacturers, including Bombardier, Mack and Kenworth, directly utilize Timbren kits in their commercial products. Many other fleets, modifiers and converters install the Aeon® spring as a supplementary suspension for their vehicles.

With over 30 years experience manufacturing Aeon® Hollow Rubber Springs, Timbren Industries is prepared to meet your needs. They offer the best quality and reliability in rubber suspension products. For all your suspension demands, choose Timbren's Aeon® springs.

Timbren Warranty

Lifetime Limited Warranty

On Suspension Enhancement System kits.

5 Year Limited Warranty

On Axle-Less Trailer Suspensions, Silent Ride Trailer Suspensions, Dakota Air Trailer Suspensions, and STi Trailer Suspensions.

3 Year Limited Warranty

On Aeon Springs for OEM Customers.

1 Year Limited Warranty

On shock absorbers, airbags, and other components of full suspension systems.

What the warranty does not cover

Normal wear and tear over time, damage from abuse or neglect, corrosion, and damage resulting from accidents is not covered. Improper installation including welding will void any warranty. Any alteration of products beyond the included installation instructions will void the warranty. Labor, freight, collateral damage or ancillary costs which may arise as a result of the failed part.

You can view the full details of Timbren’s warranty here.

How to get service

Contact Timbren Industries at 1-800-263-3113 or sales@timbren.com

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