D.I.D : DID/JT Chain Kit 520ERT3 13/50 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €109.10
D.I.D 484586 : DID/REN Chain Kit 520ERT3 14/50 Racing - Ultra-Light Self-Cleaning Rear Sprocket €148.13
D.I.D 3035999 : DID/PBR Chain Kit 525ZVM-X2 15/36 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket €265.99