XClutch Stage 1 HD (Heavy Duty )organic upgrades have been designed for performance street applications where driveability is critical. All Stage 1 HD the Heavy Duty model upgrades to an even heavier pressure plate, but still with a full-face organic Ultra Fiber disc. which offers the best driveability in the range. Stage 1 HD kits include a heavy duty pressure plate with increased clamping force for improved torque capacity and each kit has been designed and developed to offer the best balance between pedal effort/feel and torque capacity for street vehicles.
Each kit includes a throwout bearing, pilot bearing, and an alignment tool -- everything you need for installation. Rated to 510/lbs. Fits all 2004-2021 STI,