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Timbren Industries ASR35HDSRH 3500 lb Heavy-Duty Axle-Less Trailer Suspension Right Side

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

ASR35HDSRH
05/29/2036 7:35 PM
Sale Price

$376.64

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Usually delivered within 2 days

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Product Details

The Timbren Industries ASR35HDSRH is the right-hand (passenger side) component of Timbren's 3,500 lb Heavy-Duty Axle-Less Trailer Suspension system. Engineered for demanding off-road trailer applications, this single-side suspension unit eliminates the traditional beam axle entirely, delivering improved ground clearance and an independent suspension geometry that fits virtually any trailer frame width.

At the heart of this system is Timbren's proprietary AEON® progressive-rate hollow rubber spring, which absorbs road shock and supports the trailer's load while delivering a smooth, stable ride regardless of load size. The suspension compresses and becomes progressively stiffer as load increases, while the rebound spring acts as a return device to minimize rattle and bottoming out — keeping constant pressure on the arm so the system is never fully relaxed.

Key Features:

  • 3,500 lb rated capacity — optimal operating load between 2,100 and 2,800 lbs (60–80% of rated capacity)
  • Heavy-gauge steel construction for durability under the increased demands of off-road use
  • Axle-less independent design — each side operates independently for better control and reduced trailer sway
  • AEON® rubber jounce and rebound springs for smooth, quiet shock absorption
  • Polyurethane bushings at the control arm pivot point for precise alignment and long-term stability
  • Included alignment shims allow adjustment of suspension alignment and camber to suit your specific trailer frame
  • Built-in camber and toe-in geometry helps the trailer track straight and reduces tire wear
  • Black powder-coated steel mounting brackets for corrosion resistance
  • Right-hand (passenger side) unit — sold individually

Timbren's axle-less suspension design is built to perform in extreme environments, from desert heat to sub-freezing winters. Mounting hardware is included for a straightforward installation. Note: Hub and brakes are not included with this spindle-only component; compatible hubs and brake kits are available separately.

All was good

Great price and quick shipper. Thank you.

Your system showed delivery three days before it was delivered. Caused of concern.

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Thank you

Outstanding product and fast delivery. I will continue buying from this company..

Quick, Easy to use, great prices! Very excited to have found this!!

Quick and easy

Fast delivery and exactly as described

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