Upgrade your vehicle’s rear suspension with the Timbren timGMRTT15S Suspension Enhancement System. Designed for severe-service applications such as slide-in campers and salt spreaders, this kit provides a 7,000-pound load capacity to help reduce vehicle squatting, sagging, and suspension settling. Its rubber spring technology automatically adjusts to changing loads and road conditions while cushioning road shocks for improved ride control.
Timbren SES Kits offer a maintenance-free alternative to air-assist suspension systems. The progressive rubber cushions require no air lines, fittings, compressors, or ongoing adjustments, eliminating common leak points and simplifying long-term ownership. The kit is designed to improve handling, stability, and resistance to trailer sway when carrying heavy or uneven loads.
Installation is straightforward and can be completed in minutes using basic hand tools. No drilling, air-line routing, or special equipment is required, allowing the Timbren timGMRTT15S to bolt directly into place. This rear severe-service kit is engineered for select GMC Sierra 1500 and Chevrolet Silverado 1500 applications, including listed 1999 and 2011 models. Confirm vehicle fitment before ordering.
Built by Timbren, a leader in rubber spring technology since 1965, this Suspension Enhancement System is designed for dependable performance and long service life. The kit includes Timbren’s lifetime warranty and delivers added support for work, towing, and load-carrying applications without compromising everyday usability.
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