D.I.D 485582 : DID/REN Chain Kit 520VX3 13/51 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €147.53
D.I.D : DID/PBR Chain Kit 520VX3 14/52 Standard - Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket €130.29
RENTHAL 486367 : RENTHAL Chain Kit 520R1 13/50 Standard - Ultra-Light Self-Cleaning Rear Sprocket €229.98