JT DRIVE CHAIN 483637 : JT Chain Kit 520HDS 13/49 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €70.47
D.I.D : DID/PBR Chain Kit 520DZ2 15/50 Reinforced - Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket €111.21
AFAM 48010837 : AFAM Chain Kit 520XRR3 13/51 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €156.12