AFAM : AFAM Chain kit 520XHR2 16/42 Super-Reinforced - Ultra-light Hard anodized rear sprocket €210.97
D.I.D : DID/JT Chain Kit 520ZVM-X 16/42 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €147.60
AFAM 48010551 : AFAM Chain Kit 420MX2 10/44 Standard - Ultra-Light Hard Anodized Rear Sprocket €78.28