SuperPro SPF3632K Radius Arm to Differential Polyurethane Bushing Kit

The SuperPro SPF3632K is a radius arm-to-differential polyurethane bushing kit engineered to replace worn OEM rubber bushings at the critical junction where the radius arm meets the differential. This precision-engineered kit restores proper suspension geometry and eliminates the vague handling and premature tire wear caused by deteriorated factory bushings.

Key Features:

• Proprietary polyurethane construction — SuperPro's engineering-grade polyurethane formula outperforms OEM rubber in durability, temperature resistance, and dimensional stability
• Knurled bore design — reduces surface contact area between the bushing and crush tube for unrestricted pivoting and lower friction
• Integral grease retention — built-in grease retention lips keep lubricant in place for the life of the bushing, eliminating the need for periodic re-greasing
• Bullet grooves and voiding — allows for minor variances in the radius arm and accommodates load-induced material flow to prevent noise, vibration, and harshness
• Unaffected by oils, coolants, and extreme temperatures — maintains performance in all operating environments
• Lifetime warranty — all SuperPro SPF bushings are backed by a full lifetime warranty including off-road, racing, and motorsport use
• Designed and manufactured in Australia — developed with nearly 5 decades of suspension engineering experience

Worn radius arm bushings allow excessive deflection at the differential mount point, resulting in unpredictable handling, accelerated tire wear, and a degraded driving experience. The SuperPro SPF3632K restores the correct pivot point geometry, improving straight-line tracking, steering response, and overall suspension control. This kit is an ideal upgrade for daily drivers, tow vehicles, and off-road builds alike.