AFAM 48011316 : AFAM Chain Kit 520MR2 13/52 Standard - Ultra-Light Hard Anodized Rear Sprocket €109.48
AFAM 3038400 : AFAM Chain Kit 520MX6 13/49 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €138.59
AFAM 3039902 : AFAM Chain Kit 520MX6 13/50 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €138.68
AFAM 48011497 : AFAM Chain kit 520XRR3 13/51 Reinforced - Ultra-light Hard anodized rear sprocket €146.51
JT DRIVE CHAIN : JT/JT Chain Kit 420HDR 12/48 (No OEM Ratio) Reinforced - Steel Standard Rear Sprocket €36.40