ZF Dual sprocket for Beta RR/Xtrainer 125-200-250-300 2T and RR 350-390-400-430-450-480-498 4T from 2013 to 2026
Steel outer ring with an aluminium inner red anodized
Available with Z-48, 49, 50, 51
ZF Dual last at least 3 times longer than any other aluminium sprocket, while being half the weight of a normal steel sprockets. The steel teeth also offer greater life for your whole system.