RENTHAL 482343 : RENTHAL Chain Kit 520R1 13/49 Standard - Ultra-Light Self-Cleaning Rear Sprocket €218.29
AFAM 48011363 : AFAM Chain Kit 520XRR3 14/48 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €151.99
AFAM 48011317 : AFAM Chain Kit 520MR2 13/52 Standard - Ultra-Light Hard Anodized Rear Sprocket €109.48
RENTHAL 486385 : RENTHAL Chain Kit 520R3 13/50 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €256.91