alpha Racing Flanged Rear Sprocket Nut BMW HP4 (2012-2014), M12x1.5, self-locking, 10.9, for rear sprocket and for the HP4 only (or BMW S1000RR using HP4 wheels and sprocket carrier - available separately in this SHOP). This is for (1) one pc. Please note that (5) five pcs. are required for the rear sprocket.
Benefit from the unrivaled racing knowledge of alpha Racing in Germany and their professional experience in World Superbike, World Superstock, German IDM Superbike Championship, FIM Superstock Cup 1000, and 24 Hour Endurance Racing by using genuine alpha Racing Performance Parts.