AFAM 48011190 : AFAM Chain Kit 428MX 14/51 Standard - Ultra-Light Hard Anodized Rear Sprocket €112.56
D.I.D 3028028 : DID/JT Chain kit 525ZVM-X2 15/42 Super-Reinforced - Ultra-light rear sprocket €162.82
JT DRIVE CHAIN : JT/JT Chain Kit 420HDR 12/52 (No OEM Ratio) Reinforced - Steel Standard Rear Sprocket €37.92