JT DRIVE CHAIN : JT/JT Chain Kit 420HDR 12/48 (OEM Ratio) Reinforced - Steel Standard Rear Sprocket €36.40
AFAM 480027 : AFAM Chain kit 525XHR3 15/42 Super-Reinforced - Ultra-light Hard anodized rear sprocket €216.45
AFAM 48011930 : AFAM Chain Kit 525XRR 16/42 Reinforced - Ultra-Light Hard Anodized Rear Sprocket €185.59