300 hp or Lower - Choice of spring depending on engagement preference & 2mm Rollers, 1335 or 1338 ramps
300 hp or Higher - Choice of spring depending on engagement preference &, 3mm Rollers, 1335 or 1338 & 8g Race Weights ** The TAPP Polaris Clutch needs the Polaris Clutch Bolt part #7518412, Clutch washer, retainer #513244