AFAM 48011315 : AFAM Chain Kit 520MR2 13/50 Standard - Ultra-Light Hard Anodized Rear Sprocket €108.10
AFAM 3040575 : AFAM Chain Kit 520MX6 13/48 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €138.92
RENTHAL 486364 : RENTHAL Chain Kit 520R3 13/50 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €258.81
RENTHAL 484883 : RENTHAL Chain Kit 520R1 13/49 Standard - Ultra-Light Self-Cleaning Rear Sprocket €229.51