AFAM 48013058 : AFAM Chain Kit 525XSR2 15/42 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket €195.88
D.I.D 482533 : DID/REN Chain Kit 520ERT3 13/51 Racing - Ultra-Light Self-Cleaning Rear Sprocket €139.85
AFAM 482622 : AFAM Chain kit 525XRR 15/40 Reinforced - Ultra-light Hard anodized rear sprocket €162.96