PBR 899 53 TC4 : PBR Twin Color Aluminium Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket 899 - 520 €52.30
RENTHAL 482347 : RENTHAL Chain Kit 520R1 13/50 Standard - Ultra-Light Self-Cleaning Rear Sprocket €229.51
AFAM 48012559 : AFAM Chain Kit 525XSR2 16/47 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket €195.18
D.I.D 486876 : DID/JT Chain Kit 520ERT3 17/48 Racing - Ultra-Light Self-Cleaning Rear Sprocket €107.74
D.I.D 48010832 : DID/PBR Chain Kit 520ERT3 13/50 Super-Reinforced - Ultra-Light Rear Sprocket €106.82