Chainring in aluminium alloy AL7075-T6, 3K glossy structural carbon fiber with Titanium Grade 5 pins.
Outer gear with 53/52/50 and 39/36/34 teeth and BCD 110mm compact 5 arms.
DA9100?version compatible with Shimano Dura Ace FC-9100, Ultegra FC-8000 or SRM Origin 9100 cranksets
Outer gear with 53?and 39 teeth and BCD 130 mm.
Compatible with Shimano, SRAM and Campagnolo 10-11 speed chains and groups.
100% made in Italy.