Black finished CNC machined billet aluminum. The best and finest looking primary belt drives for late models Sportsters. Ready to handle stock up to Big Inch performance motors. Comes with a Goodyear 2″ wide 8mm pitch belt, 45t engine pulley and 72t. clutch pulley. Included is a 6-spring Evolution Industries Stage 1 Diamond Terminator clutch that will work with the stock clutch cable. Note: Will require forward controls. Replacement parts: 552076 Belt. 552077 Clutch friction plate set. 552078 Clutch steel plate set.