SuperPro SPF5685K Front Upper Control Arm Inner Bushing Kit

The SuperPro SPF5685K is a front upper control arm inner bushing kit engineered as a direct-fit polyurethane replacement for the factory rubber bushings. Designed to restore and improve suspension precision, this kit addresses one of the most common causes of handling degradation, excessive tire wear, and alignment instability on high-mileage trucks.

Key Features:

• Polyurethane construction — significantly more durable than OEM rubber, resisting wear, cracking, and deterioration caused by heat, oil, and road debris
• Direct-fit replacement — engineered to OE dimensions for a straightforward installation with no drilling, cutting, or modifications required
• Reduced suspension deflection — tighter bushing material maintains consistent wheel alignment geometry under load for improved handling response and steering feel
• Application-specific durometer — SuperPro tunes bushing hardness per application to deliver performance benefits while minimizing noise, vibration, and harshness (NVH)
• Knurled inner sleeve — retains lubrication longer, reducing maintenance intervals and preventing dry-squeak
• Includes installation lubricant — grease is included to ensure proper installation and protect against squeaking
• Lifetime warranty — SuperPro's polyurethane bushings are backed by a lifetime warranty, including coverage for racing and off-road use

Worn or failed upper control arm bushings are a leading cause of wandering steering, premature tire wear, and loose or imprecise handling. The SPF5685K replaces the factory inner upper control arm bushings with SuperPro's proven polyurethane compound, restoring proper suspension geometry and delivering long-lasting performance that outlasts standard rubber replacements.