Chain failure guard kit by alpha Racing for S1000RR 2015- to protect your BMW's crankcase against damage and prevents chain slack, complete with bushings and fasteners. This alpha Racing chain failure guard made from wear resistant polymer, and includes installation hardware: 4 screws with washer M6 x 25, 3 bushings 8.35 x 6 x 14.95mm, and 1 bushing 8.35 x 6x14.95mm. Weight 0.175 kg.