FactionFab Titanium Rear Brake Shim Set 2 Piston Brembo / 2004-2017 STI

The FactionFab Titanium Rear Brake Shim Set for 2004–2017 Subaru STI models with compatible 2-piston Brembo rear calipers is designed to help manage heat transfer from the brake pads to the caliper pistons. During aggressive street driving, autocross, and track sessions, repeated hard braking generates significant heat that can transfer into the calipers and brake fluid, potentially contributing to brake fade.

These titanium shims create a thermal barrier between the back of the brake pad and the caliper piston, helping slow heat transfer into the braking system. Manufactured from 6AL-4V Grade 5 titanium, the shims are 1.0mm thick and designed to provide thermal insulation while remaining suitable for demanding performance applications.

By helping reduce heat transferred into the calipers, the FactionFab shims can support more consistent braking during repeated hard stops and help manage brake temperatures during extended track sessions. They are a simple addition for drivers looking to improve brake thermal management without replacing the entire braking system.

Each kit includes four titanium shims for compatible rear brake pad applications. FactionFab notes that the shims may be permitted in many SCCA and NASA competition classes, but rules vary by class and vehicle configuration. Check the current regulations before competition use and verify compatibility with your specific brake pads and calipers before ordering.