JT DRIVE CHAIN : JT/JT Chain Kit 420HDR 11/47 (OEM Ratio) Reinforced - Steel Standard Rear Sprocket €35.84
JT DRIVE CHAIN : DID/JT Chain Kit 420D 14/62 (No OEM Ratio) Standard - Steel Standard Rear Sprocket €43.19
RENTHAL 484394 : RENTHAL Chain Kit 520R1 13/48 Standard - Ultra-Light Self-Cleaning Rear Sprocket €229.51
D.I.D : DID/PBR Chain kit 520ZVM-X 17/41 Super-Reinforced - Ultra-light Hard anodized rear sprocket €185.99