D.I.D : DID/PBR Chain Kit 520DZ2 13/50 Reinforced - Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket €108.93
D.I.D 3035992 : DID/PBR Chain Kit 525ZVM-X2 15/41 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket €280.70
D.I.D : DID/PBR Chain Kit 520DZ2 13/51 Reinforced - Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket €101.58