D.I.D : DID/JT Chain Kit 520ERT3 13/48 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €98.71
RENTHAL 481370 : RENTHAL Chain Kit 520R1 13/49 Standard - Ultra-Light Self-Cleaning Rear Sprocket €223.53
AFAM 48012922 : AFAM Chain kit 520XHR2 16/41 Super-Reinforced - Ultra-light Hard anodized rear sprocket €203.41
AFAM 48011426 : AFAM Chain kit 520XRR3 14/48 Reinforced - Ultra-light Self-cleaning rear sprocket €155.08