RENTHAL 482344 : RENTHAL Chain Kit 520R1 13/51 Standard - Ultra-Light Self-Cleaning Rear Sprocket €218.74
AFAM 3038397 : AFAM Chain Kit 520MX6 12/50 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €140.98
AFAM 48013122 : AFAM Chain kit 520XSR 16/43 Super-Reinforced - Ultra-light Hard anodized rear sprocket €173.94