D.I.D : DID/JT Chain Kit 520ERT3 13/50 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €102.88
D.I.D : DID/PBR Chain Kit 420D 13/51 (No OEM Ratio) Standard - Aluminium Ultra-Light Rear Sprocket €56.57
D.I.D : DID/PBR Chain kit 520ZVM-X 16/42 Super-Reinforced - Ultra-light Hard anodized rear sprocket €187.91