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Timbren Industries ASR35HDS02 Heavy-Duty Axle-Less Trailer Suspension 3500 lb 4" Lift Long Spindle Off-Road

Manufacturer

Timbren Industries

<h3>About Timbren Industries</h3><p>Timbren Industries is a privately held, family-owned company headquartered in Whitby, Ontario, Canada, with a story rooted in a single bold idea: that vehicle suspensions could — and should — work better. Founded in 1968 when entrepreneur Arnold Heron acquired the North American patent rights to a novel hollow rubber spring design known as &quot;Aeon,&quot; Timbren has spent more than 55 years turning that insight into a lineup of suspension upgrade products trusted by weekend haulers, fleet operators, and off-road enthusiasts alike. The company name itself is a nod to family roots — a combination of the names of Arnold's two children, Tim and Brenda.</p><h3>The Aeon® Rubber Spring Advantage</h3><p>At the heart of every Timbren product is the proprietary <strong>Aeon® hollow rubber spring</strong>. Unlike conventional steel leaf springs, which operate at a fixed linear rate, or air suspension systems that require ongoing pressure monitoring and maintenance, Aeon® springs feature a <strong>progressive spring rate</strong> — meaning they work harder as the load increases. The result is a suspension that stays calm and controlled under heavy towing or hauling, yet rides smoothly when the truck is empty. The self-damping properties of the rubber also act similarly to a shock absorber, cushioning road impacts without any additional components.</p><p>This &quot;install it and forget it&quot; philosophy is a key reason Timbren has earned a loyal following. There are no air lines to route, no pressure gauges to check, and no risk of a sudden air leak leaving you stranded with an unstable load on the highway. Every SES kit is engineered to bolt directly onto factory suspension mounting points, making most installations achievable in a driveway without specialty tools.</p><h3>Product Lineup: From Work Trucks to Off-Road Trails</h3><p>Timbren's flagship <strong>Suspension Enhancement System (SES)</strong> product line covers a vast range of vehicles — from compact SUVs to heavy-duty pickups and commercial rigs. The <a href="/13739-timbren-industries-suspension-rubber-helper-spring-kit-14989">Suspension Rubber Helper Spring Kits</a> represent the core of this lineup, replacing OEM bump stops with Aeon® springs that actively engage under load to level the vehicle, reduce squat, and improve towing stability. For trucks equipped with traditional leaf spring rear suspensions, Timbren's <a href="/13739-timbren-industries-leaf-helper-spring-15009">Leaf Helper Springs</a> integrate cleanly with the existing pack to add progressive-rate support without altering ride height when unloaded.</p><p>For drivers who prefer or already run an air suspension setup, Timbren's <a href="/13739-timbren-industries-air-suspension-helper-spring-15005">Air Suspension Helper Springs</a> can complement the existing system, providing a reliable rubber backup that adds stability regardless of air pressure fluctuations. Off-road enthusiasts will appreciate the <a href="/13739-timbren-industries-suspension-multi-purpose-bump-stop-15895">Suspension Multi Purpose Bump Stops</a> — Timbren's Active Off-Road Bumpstop line — which soften the bone-jarring jounce that occurs when a vehicle bottoms out on rough trails, keeping occupants comfortable and suspension components protected. Timbren also produces <a href="/13739-timbren-industries-coil-spring-support-10882">Coil Spring Support</a> solutions for vehicles with independent front and rear coil suspension setups, broadening their coverage across modern truck and SUV platforms.</p><h3>A Legacy Built on Innovation and Reliability</h3><p>Timbren's products have found their way onto everything from daily-driver pickups to Mack and Kenworth big rigs, a testament to the scalability and durability of the Aeon® design. The company backs every SES kit with a <strong>Lifetime Warranty</strong> and a 100-Day Satisfaction Guarantee, reflecting decades of confidence in the technology. Whether you are towing a fifth-wheel camper, hauling a contractor's payload, or navigating rocky back-country trails, Timbren Industries offers a suspension solution engineered for the real world — not just ideal road conditions.

Part Number

ASR35HDS02
05/29/2036 7:35 PM
Sale Price

$1,132.56

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Product Details

The Timbren ASR35HDS02 heavy-duty axle-less suspension is designed specifically for off-road use, with components made from heavy-gauge steel to support the increased demands of trailers used on off-road terrain. This innovative system eliminates the need for a traditional axle and operates independently, mounting directly to your trailer frame.

Key Features:

  • 3,500 lb weight capacity, designed for single and dual axle trailer configurations
  • Heavy-duty outboard arms with 4-inch lift and long spindles for use with wide off-road tires larger than 235/85R16
  • AEON progressive rate main springs absorb road shock and support the trailer's load while delivering a smooth, stable ride
  • Universal fit - works with any trailer frame width
  • 5-bolt brake mounting flange compatible with hubs using 25580 inner and 15123 outer bearings
  • Polyurethane bushings at pivot points provide better stability and weather-resistant durability
  • E-Z Lube long spindles maintain proper deck height

The suspension compresses and becomes stiffer as load increases, boosting spring strength, while rebound springs minimize rattle and bottoming out. Built-in camber and toe-in help your trailer track straight, reducing tire wear. This system requires crossbeam support - if your trailer frame doesn't have a crossmember, you can add one using 2" x 2" steel tubing through the integrated square holes.

Backed by a 3-year warranty. Note: Hubs, drums, and brake assemblies sold separately. Compatible with Dexter hub assemblies part #8-201-9UC3-EZ.

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