GM Rear C-Arm Bushings 65-88

The GM Rear C-Arm Bushings 65-88 from Prothane are engineered to restore and upgrade the rear suspension geometry on classic and muscle car platforms spanning four decades of General Motors production. If you're rebuilding a C10 truck, Camaro, Chevelle, or Nova, worn factory rubber bushings compromise handling precision, allow excessive suspension movement, and transmit harshness to the chassis—issues compounded by modern tire grip and aggressive driving. These polyurethane replacements eliminate that slop and deliver consistent suspension response whether you're cruising boulevard-style or pushing your machine on the road course.

Prothane's polyurethane formulation outperforms OEM rubber by resisting heat, UV degradation, and age-related cracking that plague original equipment after 40+ years in service. The material maintains its elasticity across temperature extremes, preventing the binding that often develops in vintage suspensions, while delivering superior load-carrying capacity that accommodates modern brake systems and performance modifications. Unlike bushings that require constant greasing, these sealed units resist contamination and maintain their mechanical properties without maintenance—a critical advantage when you're trying to dial in suspension geometry on vehicles with tight clearances and complex linkage arrangements.

Restoration shops and serious enthusiasts standardly specify Prothane C-Arm bushings when upgrading rear suspensions on first and second-generation F-bodies, A-bodies, and C10/C20 trucks, particularly in builds combining independent rear suspension geometry upgrades or coilover conversions. The 65-88 fitment window covers the widest range of GM platforms, making this a universal solution for anyone tackling suspension overhaul. Installation requires removing the rear axle or control arm assembly; once pressed in place, these bushings integrate seamlessly with stock or aftermarket suspension components and work reliably with both leaf-spring and coilover setups.