D.I.D 48010717 : DID/PBR Chain Kit 520ERT3 13/50 Super-Reinforced - Ultra-Light Self-Cleaning Hard Anodized Rear Sprocket €115.08
AFAM 486605 : AFAM Chain kit 520XRR3 13/50 Reinforced - Ultra-light Self-cleaning rear sprocket €141.36
AFAM 48010764 : AFAM Chain kit 520XRR3 13/48 Reinforced - Ultra-light Self-cleaning rear sprocket €150.62
D.I.D 483602 : DID/JT Chain Kit 520DZ2 13/48 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €96.34