JT SPROCKETS JTA822.45BLK : JT SPROCKETS Aluminium Ultra-Light Self-Cleaning Rear Sprocket 822 - 520 €28.93
D.I.D 48010699 : DID/JT Chain Kit 520ERT3 14/50 Super-Reinforced - Ultra-Light Self-Cleaning Rear Sprocket €106.99
AFAM 48012793 : AFAM Chain Kit 520XHR2 15/38 Super-Reinforced - Ultra-Light Hard Anodized Rear Sprocket Without Ducati Rear Spro €183.53