D.I.D 48010734 : DID/PBR Chain Kit 520ERT3 13/49 Super-Reinforced - Ultra-Light Rear Sprocket €106.58
D.I.D : DID/PBR Chain Kit 520ERT3 16/50 Super-Reinforced - Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket €112.66
D.I.D 3042343 : DID/PBR Chain Kit 525ZVM-X2 17/44 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket €191.28
AFAM 48011223 : AFAM Chain Kit 520MR2 13/50 Standard - Ultra-Light Self-Cleaning Rear Sprocket €109.83