AFAM 48012501 : AFAM Chain Kit 520XHR2 17/40 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket €190.05
D.I.D 48011641 : DID/JT Chain Kit 520ERT3 14/48 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €99.06
D.I.D 3028031 : DID/JT Chain kit 525ZVM-X2 15/39 Super-Reinforced - Ultra-light rear sprocket €153.92