D.I.D 482532 : DID/REN Chain Kit 520ERT3 12/48 Racing - Ultra-Light Self-Cleaning Rear Sprocket €130.85
D.I.D 3029688 : DID/PBR Chain kit 525ZVM-X2 15/41 Super-Reinforced - Ultra-light Hard anodized rear sprocket €262.36
D.I.D 48011293 : DID/PBR Chain kit 520DZ2 SDH 14/48 Super-Reinforced - Ultra-light rear sprocket €92.11