Series of 10/9-speed universal chainrings with five 110mm BCD holes. Manufactured from CNC-machined AL 7075 T6 aluminium alloy. Black finish through the TT Total Treatment anodization. Six teeth options available for internal chainrings and ten for external chainrings.

Every watt you generate deserves to be transmitted with total efficiency.X2 RD is the chainring designed for those who demand the maximum: lightweight, stiff, and capable of transferring every watt with absolute precision.

Series of 11/10/9-speed shrouded chainrings with five holes. Manufactured from CNC-machined AL 7075 T6 aluminium alloy. Black finish through the TT Total Treatment anodization. The Crono series is available with 110, 130 and 135 mm BCD. Six teeth options available.