D.I.D : DID/PBR Chain Kit 520MX 13/50 RACING - Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket €143.69
RENTHAL 485401 : RENTHAL Chain Kit 520R1 14/48 Standard - Ultra-Light Self-Cleaning Rear Sprocket €229.98
AFAM 3039880 : AFAM Chain Kit 520MX6 13/51 Reinforced - Ultra-Light Hard Anodized Rear Sprocket €133.44