AFAM 480158 : AFAM Chain Kit 525XHR3 16/43 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket €229.48
D.I.D 48011382 : DID/PBR Chain Kit 520ERT3 14/50 Super-Reinforced - Ultra-Light Rear Sprocket €104.57
RENTHAL 484405 : RENTHAL Chain Kit 520R1 13/51 Standard - Ultra-Light Self-Cleaning Rear Sprocket €218.29