D.I.D : DID/JT Chain Kit 520ERT3 13/51 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €104.99
D.I.D 48010718 : DID/JT Chain Kit 520ERT3 13/50 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €106.99
D.I.D : DID/JT Chain Kit 520ERT3 14/50 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €109.10
RENTHAL 481344 : RENTHAL Chain Kit 420R1 15/56 Standard - Ultra-Light Self-Cleaning Rear Sprocket €134.87