AFAM 48011388 : AFAM Chain Kit 520XRR3 13/50 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €153.35
AFAM 48011914 : AFAM Chain Kit 525XRR 15/43 Reinforced - Ultra-Light Hard Anodized Rear Sprocket €173.59
D.I.D : DID/PBR Chain Kit 520DZ2 13/50 Reinforced - Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket €105.75