D.I.D 3028021 : DID/JT Chain kit 525ZVM-X2 15/41 Super-Reinforced - Ultra-light rear sprocket €162.82
AFAM 48011516 : AFAM Chain Kit 520XRR3 12/50 Reinforced - Ultra-Light Hard Anodized Rear Sprocket €145.49
AFAM 48012443 : AFAM Chain Kit 520XHR2 17/42 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket €203.43