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Timbren Industries GMRCK15S Rear Suspension Enhancement System with Aeon Rubber Springs

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

GMRCK15S
08/25/2036 10:52 AM
Sale Price

$269.36

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Timbren Industries GMRCK15S Suspension Enhancement System is designed to eliminate rear sag, reduce sway, and improve roll stability when towing or hauling heavy loads. This rear suspension helper spring kit provides progressive suspension support that automatically adjusts to varying load conditions, keeping your truck level and stable whether you're towing an RV or hauling cargo in the bed.

Key Features:

  • Patented Aeon hollow rubber springs deliver progressive spring rate that increases resistance as load increases
  • 8,600 lb weight capacity for superior load-handling performance
  • Cushions road shocks and absorbs impacts for a smoother, more comfortable ride
  • No maintenance required—no air lines, compressors, gauges, or pressure adjustments needed
  • Bolt-on installation using included steel mounting brackets and hardware
  • Can be installed in under 30 minutes with basic hand tools
  • Rubber springs remain in contact with frame but don't affect unloaded ride quality
  • Each spring works independently to reduce body roll and handle off-center loads
  • Lifetime warranty against defects in materials and workmanship

What's Included:

  • Two Aeon SES hollow rubber springs
  • Two steel mounting discs
  • All necessary hardware for installation

Unlike air bag systems, Timbren SES kits require zero post-installation maintenance and provide true "set it and forget it" performance. The durable Aeon rubber construction ensures years of reliable service while improving vehicle handling, reducing trailer sway transfer, and maintaining proper weight distribution for safer towing and hauling.

Products specifications

Prop 65 Yes/No

No

Grade Type

Performance

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