BMW S1000R 12-18 Vortex 525 Chain and Sprocket Kit 17-45 Tooth CKG7600
Vortex Steel Front Sprocket. Vortex Steel Rear Sprocket. Special Vortex Nichel plating to resist corrosion. Vortex RX3 Chain. Each sprocket is cupped down from the tooth ring to the body to reduce as much weight as possible.