38GR Bump Rubber (Black)

The Penske Racing Shocks 38GR Bump Rubber in black is a precision shock mount foam component engineered to manage suspension impact and vibration isolation in high-performance racing and off-road applications. Built to OEM specifications with a 2-inch outer diameter, 0.6-inch inner diameter, and 2.375-inch height, this bump stop foam isolator delivers consistent shock absorption across repeated duty cycles without degradation or compression set.

Weighing just 0.09 pounds, the BR-38 bump rubber is designed to interface with Penske shock assemblies and suspension tree mounts. The 38-grain foam construction provides progressive deflection characteristics that prevent metal-to-metal contact during suspension compression while maintaining compliance across a range of load conditions. The compact profile and precise dimensional tolerances ensure reliable fit within OEM shock tower clearances and mounting constraints.

This component is essential for motorsports applications, racing platforms, and high-articulation off-road vehicles where shock travel and impact forces require controlled energy dissipation. Users operating in variable terrain—from track environments to rocky backcountry—rely on bump stops to protect shock internals from bottoming-out damage and to maintain predictable suspension response under extreme loading.

The black foam material resists UV degradation and environmental moisture ingress, supporting extended service life in outdoor storage and operational conditions. Penske Racing Shocks components are recognized throughout the motorsports and suspension engineering community for precision manufacturing and consistent performance under demanding duty. Individual bump rubbers are sold as single units, allowing targeted replacement or assembly customization.