Prothane 7-303 Rear Control Arm Bushing Kit Without Shells for 1963-1982 Corvette

The Prothane 7-303 is a polyurethane rear control arm bushing kit designed as a direct upgrade over the factory rubber bushings on 1963–1982 Chevrolet Corvettes. Worn or soft rubber bushings allow the control arms to shift under load, causing caster and camber settings to drift and degrading overall handling precision. These Prothane bushings restore tight, predictable suspension geometry by providing significantly greater compliance resistance than OEM rubber.

Key Features:

• Premium polyurethane construction — far more resistant to wear, oils, chemicals, and weathering than factory rubber bushings
• Without shells — designed to reuse the vehicle's existing metal shells for a cost-effective, direct-fit installation
• Superior compliance resistance — controls unwanted rear suspension hop and shudder under acceleration and hard cornering
• Maintains alignment settings — helps eliminate high-speed steering vibrations and keeps caster and camber angles locked in during aggressive driving
• Precision fabrication — engineered for an exact fit to the rear control arm pivot points on C2 and C3 Corvettes
• Includes Prothane Super Grease — supplied lubricant ensures quiet, squeak-free operation throughout the life of the bushing
• Lifetime warranty — Prothane backs these bushings against defects in materials and workmanship for as long as the original purchaser owns the vehicle
• Made in the USA

Available in red or black — both colors share the same durometer hardness and performance characteristics. The black version incorporates a small amount of graphite into the polyurethane compound, which can further reduce the likelihood of squeaking. Proper lubrication at installation is the best way to ensure long-term, squeak-free performance with either color.