D.I.D : DID/PBR Chain Kit 420D 13/51 (No OEM Ratio) Standard - Aluminium Ultra-Light Rear Sprocket €55.86
AFAM : AFAM Chain Kit 428XMR 13/53 (No OEM Ratio) Super-reinforced - Steel Standard Rear Sprocket €96.81
JT SPROCKETS JTA822.49BLK : JT SPROCKETS Aluminium Ultra-Light Self-Cleaning Rear Sprocket 822 - 520 €31.32
JT DRIVE CHAIN 485649 : JT Chain Kit 520HDS 13/50 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €72.77