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Timbren Industries GMRG25C SES Suspension Enhancement System

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

GMRG25C
08/25/2036 6:36 AM
Sale Price

$269.36

In Stock (10)

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Usually delivered within 2 days

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Product Details

The Timbren Industries GMRG25C SES (Suspension Enhancement System) provides a reliable suspension upgrade for GM 2500/3500 trucks, designed to improve ride quality and load-carrying capacity when towing or hauling heavy loads. This system uses hollow rubber springs that engage progressively as weight increases, providing additional support exactly when needed without affecting your truck's unloaded ride quality.

Key Features:

  • Hollow rubber spring design activates progressively under load
  • No air lines, compressors, or external components to maintain
  • Eliminates squat, sway, and bottoming out when towing or hauling
  • Maintenance-free operation with lifetime warranty
  • Installs in approximately 30 minutes with basic hand tools
  • Works with existing suspension system without modifications
  • Reduces wear on factory suspension components

Unlike air bags or add-a-leaf systems, Timbren SES kits require zero maintenance and automatically adjust to load conditions. The hollow rubber springs (Aeon springs) are engineered to provide a smooth ride when unloaded while delivering up to several thousand pounds of additional load-leveling capacity when your truck is carrying cargo or towing a trailer. Installation is straightforward, mounting between the frame and axle using factory attachment points.

Products specifications

Prop 65 Yes/No

No

Grade Type

Performance

Easy! Good selection of parts and not hard to find.

Quick and easy

Great

great site

GREAT

You need to change the &quot;Review&quot; section on your website. It's pretty obvious that the reviews associated with the coresponding parts have nothing to do with the actuall part being sold!! Super annoying!!! Your prices are great, but your shipping charges are ridiculous!!!

Wow. Ordered it on a Wednesday got it in 2 days....amazing....and to top it off my mandrel bent ss tubing was packaged infinitely better then I would of imagined. The price was amazing. I literally have no complaints. I will definitely order again. I will say that items on their website were not labeled well so I used vibrants website to look up part numbers so I could get the right parts. Search engine wouldn't bring up items via part number. Kinda confusing but for all I got simply awesome.

Very easy to use.

great price and free shipping!

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