AFAM : AFAM Chain kit 520XSR 14/50 Super-Reinforced - Ultra-light Self-cleaning rear sprocket €178.05
AFAM 48011428 : AFAM Chain kit 520MR2 09/44 Standard - Ultra-light Hard anodized rear sprocket €103.31
AFAM 48012311 : AFAM Chain Kit 520XHR2 17/41 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket €194.84
AFAM 48011137 : AFAM Chain Kit 520XRR3 14/50 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €157.14