COBRA CX 50 Big Wheel 2018-and up Make COBRA Displacement 50 Model CX 50 Big Wheel Year range 2018-and up Rear Sprocket 70/75Rear Sprocket 70/75620222 Rear Sprocket 420More info ChainsChain 420642001 Chain V2 420More infoChain GP 420642002 Chain GP 420More info