AFAM 48012234 : AFAM Chain Kit 525XSR2 17/41 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket €187.65
AFAM 48011240 : AFAM Chain Kit 428MX 14/51 Standard - Ultra-Light Hard Anodized Rear Sprocket €110.85
D.I.D 486880 : DID/JT Chain Kit 520ERT3 13/48 Racing - Ultra-Light Self-Cleaning Rear Sprocket €102.20