Prothane 7-310-BL GM Full Size Rear Control Arm Bushing Kit 1965-1970 Black

Prothane's 7-310-BL Rear Control Arm Bushing Kit is engineered for GM full-size vehicles from 1965–1970, targeting both the upper and lower rear control arms. Manufactured from Prothane's proprietary black polyurethane compound, these bushings deliver a dramatic improvement in compliance resistance over worn or factory rubber bushings that can allow your suspension geometry to shift under load.

Soft, deteriorated rubber bushings are a leading cause of alignment drift, vague steering response, and unpredictable handling — especially during cornering and braking. By replacing them with precision-molded polyurethane, the 7-310-BL restores and maintains factory caster and camber settings so your alignment stays where you set it.

Key Features:

• Material: High-durometer black polyurethane — more durable and compliant than OEM rubber
• Coverage: Upper and lower rear control arm positions for GM full-size platforms (1965–1970)
• Superior compliance resistance to prevent bushing deflection under cornering and acceleration loads
• Alignment retention — keeps caster and camber settings accurately maintained between service intervals
• Includes grease fittings and installation hardware for a complete, ready-to-install solution
• Black (BL) finish blends with underbody components
• Direct OEM replacement fit — no drilling or modification required

Prothane polyurethane bushings are lifetime-rated and resist oil, ozone, and road chemicals that rapidly degrade rubber. The 7-310-BL is an ideal upgrade for classic GM muscle cars, trucks, and full-size platforms being restored or performance-tuned.