Aluminum Plate for MSC Clutch - Front is machined from premium Swiss 7075 T6 not to mention hardened with a black colored final area treatment. This lightweight slipper clutch dish has machined relief areas which decrease the friction surface to help with clutch slip modification. With the new plate, the force of this dish is regarding the circumference for the clutch pads, which increases efficiency. Fits XB4'20-21