PBR 899 52 TC4 : PBR Twin Color Aluminium Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket 899 - 520 €52.30
JT DRIVE CHAIN : DID/JT Chain Kit 420D 13/53 (No OEM Ratio) Standard - Steel Standard Rear Sprocket €46.65
AFAM 48011500 : AFAM Chain Kit 520XRR3 13/52 Reinforced - Ultra-Light Hard Anodized Rear Sprocket €147.20