AFAM 48011389 : AFAM Chain Kit 520XSR 14/50 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €175.31
AFAM 48010811 : AFAM Chain kit 520XRR3 14/53 Reinforced - Ultra-light Self-cleaning rear sprocket €160.56
D.I.D : DID/JT Chain Kit 520ERT3 13/51 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €103.92