D.I.D : DID/PBR Chain Kit 520VX3 13/51 Standard - Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket €128.32
D.I.D 3028006 : DID/JT Chain kit 525ZVM-X2 15/42 Super-Reinforced - Ultra-light rear sprocket €162.82
RENTHAL 482335 : RENTHAL Chain Kit 420R1 13/46 Standard - Ultra-Light Self-Cleaning Rear Sprocket €100.54