D.I.D : DID/JT Chain Kit 520ERT3 12/51 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €102.20
JT SPROCKETS JTA210.40BLK : JT SPROCKETS Aluminium Ultra-Light Self-Cleaning Rear Sprocket 210 - 520 €26.87
AFAM 48011387 : AFAM Chain kit 520XRR3 14/50 Reinforced - Ultra-light Self-cleaning rear sprocket €154.04
PBR 899 48 TC6 : PBR Twin Color Aluminium Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket 899 - 520 €52.30