PBR 702 52 TC4 : PBR Twin Color Aluminium Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket 702 - 520 €52.30
AFAM 48011394 : AFAM Chain Kit 520XSR 14/52 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €179.07
AFAM : AFAM Chain kit 520XHR2 17/40 Super-Reinforced - Ultra-light Hard anodized rear sprocket €190.05
D.I.D : DID/JT Chain Kit 520ERT3 13/51 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €104.94
D.I.D 3042211 : DID/PBR Chain Kit 525ZVM-X2 16/43 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket €204.41