RENTHAL 484340 : RENTHAL Chain Kit 520R3 13/49 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €264.40
AFAM 480166 : AFAM Chain kit 520XSR 16/46 Super-Reinforced - Ultra-light Hard anodized rear sprocket €181.82
D.I.D 3036395 : DID/PBR Chain Kit 525ZVM-X2 17/45 Super-Reinforced - Ultra-Light Rear Sprocket €234.41