The description for SIP BFA Race Clutch for is in progress. CNC machined aluminum outer basket, 12-bolt primary drive bolt Internal CNC machined steel basket with fixing mechanism for snap rings Needle bearing between inner and outer baskets Aluminum separation plates Five Vespa SF friction discs Pressure plate with bearings 2 CNC machined aluminum end plates 12 springs, 6 internal 6 external Does it include a 24/64 or 23/64 primary drive tooth with straight teeth Clutch plate replacement possible while the shaft is mounted Compatible with the original clutch cover of 200 cc engines