RENTHAL 484343 : RENTHAL Chain Kit 520R1 13/48 Standard - Ultra-Light Self-Cleaning Rear Sprocket €212.30
D.I.D : DID/PBR Chain Kit 520DZ2 14/50 Reinforced - Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket €102.32
JT SPROCKETS JTA478.43BLK : JT SPROCKETS Aluminium Ultra-Light Self-Cleaning Rear Sprocket 478 - 520 €29.60
D.I.D : DID/PBR Chain Kit 520ERT3 13/50 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €104.09
AFAM : AFAM Chain kit 520XHR2 17/45 Super-Reinforced - Ultra-light Hard anodized rear sprocket €213.37