Timbren Suspension
Timbren builds rubber-spring suspension for trucks that tow and haul, and independent suspension for trailers. Most RV owners come to Timbren for one of two jobs: stopping a loaded truck from sagging and swaying under a trailer or camper, or replacing a trailer's through-axle with a suspension that rides softer and clears more ground.
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SES helper springs for tow vehicles. SES (Suspension Enhancement System) kits replace the factory bump stops with hollow rubber springs that only engage under load. There are no air lines to run and nothing to inflate. Kits are specific to the truck, the axle and the year, for example the DR3500CA rear kit for the 2003-2026 Ram 3500, the DF25004F front kit for the 2019-2026 Ram 2500/3500 and the CE10G45P coil enhancers for the RAV4, Sienna, Maverick and CR-V.
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Axle-Less trailer suspension. Each side bolts to the trailer frame on its own, so there is no axle tube under the trailer. Start with the bolt-on ASR3500S (3,500 lb), or see the 2,000 lb, 3,500 lb heavy duty and 5,200 lb kits. Left and right sides and trailing arms with lift spindles are also sold separately.
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Active Off-Road Bump Stops. A softer, progressive bump stop for trucks and SUVs that leave the pavement, such as the rear set for the 2005-2023 Tacoma and the front set for Toyota and Lexus.
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Brake kits. Timbren BES brake kits are listed by truck and year for Ford F-150 and Super Duty, Ram 1500 to 3500, Silverado and Tundra.
How to pick the right Timbren part
For a tow vehicle, match the kit to the make, model, year range and axle (front or rear) in the product title, and check drive type and any lift on the listing before ordering. For a trailer, choose the Axle-Less capacity from the trailer's gross weight. Related parts: Bilstein shocks, FOX shocks, DeeMaxx trailer disc brakes and all RV brakes and suspension.
Do Timbren SES springs make the truck ride rough when it is empty?
SES springs take the place of the bump stops and are designed to carry load when the suspension compresses, so they do most of their work when the truck is loaded or towing. How close they sit to the axle when empty depends on the kit and the truck; the listing for each kit has the details.
SES helper springs or air bags?
Air bags let you adjust pressure for each load but need lines, fittings and a way to inflate them. SES springs are not adjustable, and in exchange have nothing to leak, plumb or maintain.
What is the point of an Axle-Less trailer suspension?
Each wheel moves independently and there is no axle tube across the trailer, which adds ground clearance on off-road and overland trailers. Lift-spindle trailing arms raise the trailer further.
Not sure which kit fits?
Send us the year, make, model and drive type of the truck, or the gross weight and frame width of the trailer, and we will match the part number.
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