D.I.D : DID/JT Chain Kit 520ERT3 15/50 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €107.79
AFAM 48012708 : AFAM Chain Kit 525XHR3 17/47 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket €232.23
D.I.D 48012726 : DID/PBR Chain Kit 525VX3 15/39 Standard - Ultra-Light Hard Anodized Rear Sprocket €241.82