JT SPROCKETS JTA822.53BLK : JT SPROCKETS Aluminium Ultraleichtes selbstreinigendes Kettenrad 822-520 35,10 €
D.I.D 485559 : DID/REN Chain Kit 520ERT3 14/50 Racing - Ultra-Light Self-Cleaning Rear Sprocket 140,92 €
D.I.D 3034911 : DID/JT Kettensatz 525ZVM-X2 17/45 Super verstärkt - Standard Kettenrad hinten 159,77 €
AFAM : AFAM Chain kit 520XSR 16/46 Super-Reinforced - Ultra-light Hard anodized rear sprocket 185,24 €
AFAM 48011351 : AFAM Chain Kit 520XRR3 14/50 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket 154,04 €