Timbren Industries GMRW4A Rear Rubber Bump Stop Helper SES Kit for GMC Trucks

The Timbren Industries GMRW4A SES (Suspension Enhancement System) Kit provides a reliable suspension upgrade for GMC trucks that frequently tow trailers or haul heavy loads. This rear axle helper spring kit uses hollow rubber springs that replace your factory bump stops, engaging progressively as weight increases to provide additional load support.

Key Features:

• Aeon hollow rubber springs replace OEM bump stops for progressive load support
• No air lines, compressors, or maintenance required—100% mechanical operation
• Reduces rear-end sag, body roll, and bottoming out when loaded
• Helps maintain proper suspension geometry and headlight aim under load
• Quick installation using basic hand tools—typically 30 minutes or less
• Lifetime warranty against defects in materials and workmanship
• Made in Canada from high-quality natural rubber compounds

Timbren SES Kits offer a cost-effective alternative to air bag systems while delivering consistent performance without the risk of air leaks or pressure adjustments. The rubber springs are designed to last the life of your vehicle and provide smooth, progressive support that activates only when needed. Ideal for truck owners who need occasional load support without the complexity of air suspension systems.