Threaded Bump Washer Penske 1/2in-20

The Threaded Bump Washer Penske 1/2in-20 from ALLSTAR PERFORMANCE is a precision fastening component engineered for high-performance suspension and drivetrain assembly. This specialized washer plays a critical role in coilover and bump stop installations, where load-bearing accuracy directly affects vehicle handling and ride quality. Mechanics and suspension builders rely on bump washers to properly seat damper components and distribute load evenly across mounting points, preventing premature wear and ensuring consistent shock absorber performance.

Manufactured to match the 1/2-inch by 20 threads per inch specification, this washer is designed to work seamlessly with Penske shock absorber systems and compatible aftermarket coilover kits. The threaded design allows for precise height adjustment and component alignment without slippage—a critical requirement when tuning suspension geometry on track vehicles or street performance builds. ALLSTAR PERFORMANCE's manufacturing tolerances ensure the washer seats flush against mounting surfaces, eliminating micro-movements that can cause noise and accelerated fatigue failure in high-stress applications.

This component is essential for anyone upgrading to adjustable coilover suspension or performing shock absorber maintenance on race-prepped vehicles. Whether you're fine-tuning a road course setup or rebuilding suspension geometry on a project car, the Threaded Bump Washer Penske 1/2in-20 ensures proper load distribution and damper seating. Installation requires only basic hand tools and takes minutes when paired with matching fasteners—making it a cost-effective way to maintain suspension integrity and extend shock absorber service life.