D.I.D 485606 : DID/REN Chain Kit 420NZ3 14/50 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €92.06
D.I.D : DID/JT Chain Kit 520ERT3 14/53 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €106.37
RENTHAL 486360 : RENTHAL Chain Kit 520R3 13/51 Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €248.93