Penske Bump Rubber Cup 3in

The Penske Bump Rubber Cup 3in is a precision bump stop component engineered for high-performance shock absorber assemblies. Designed for serious suspension tuners and race mechanics, this 3-inch aluminum cup serves as the interface between the shock shaft and the elastomer bump stop, controlling compression bottoming in extreme suspension articulation. Whether you're dialing in a track car's geometry or upgrading a drift platform, this component ensures consistent, progressive compression damping at the end of shock travel.

Manufactured in clear anodized aluminum, the Penske Bump Rubber Cup 3in provides corrosion resistance and durability in demanding motorsport and street-driven environments. The 3-inch diameter and precision-machined design work in concert with Penske shock absorber internals to deliver repeatable bump compliance, absorbing harsh impacts during large suspension compressions without transferring shock-induced vibration into the chassis. The anodized finish protects the aluminum from salt, moisture, and abrasive track conditions while maintaining aesthetic integrity in visible shock applications.

This component is essential for mechanics rebuilding Penske shock assemblies, upgrading factory suspension systems, or maintaining high-end performance dampers. Installation requires removal of the shock absorber and integration into the internal spring perch assembly—a task suited for technicians with shock service experience or OEM-level build procedures. Each unit is sold individually, allowing builders to refresh single shocks or complete suspension overhauls on multi-shock platforms.