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Timbren Industries FRTT350J Rear Suspension Enhancement System for Ford Super Duty

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

FRTT350J
07/12/2036 3:21 PM
Sale Price

$398.07

In Stock (9)

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Usually delivered within 2 days

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Product Details

The Timbren Industries FRTT350J Suspension Enhancement System is a rear suspension upgrade designed to eliminate sag, reduce sway, and improve stability when hauling heavy loads. This severe service kit features Timbren's patented Aeon hollow rubber springs that automatically adjust to uneven loads and road conditions without requiring any maintenance or adjustments.

Key Features:

  • Patented Aeon hollow rubber springs with progressive spring rate technology
  • 8,000 lb load capacity for heavy-duty hauling applications
  • Single-convoluted spring design for aggressive weight resistance
  • Laser-cut, precision-bent, and powder-coated steel brackets for quality fit
  • No-maintenance design—no air lines, fittings, or pressure adjustments required
  • Installs in under 30 minutes using basic hand tools
  • Replaces factory bump stops with no drilling or modifications needed
  • Lifetime warranty coverage on materials and workmanship

Unlike air bag systems, Timbren SES kits require zero post-installation maintenance and provide a true "set it and forget it" solution. The hollow rubber springs automatically cushion road shocks and progressively increase resistance as load weight increases, keeping your vehicle level whether loaded or unloaded. Ideal for truck campers, trailers, salt spreaders, and other top-heavy applications requiring maximum stability.

Products specifications

Prop 65 Yes/No

No

Grade Type

Performance

Placed an order for a tired. But was cancel by autoplicity. No reason was given. No product was sent or delivered . Call to ask reason. No answer. Money was returned....SMH..WOW..

Got my parts in time and exact. No problems at all

Quick and easy.

Nice price thx

It went just fine

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