1-piece unidirectional and multidirectional carbon fiber arm/spider design with an integrated (UT) Ultra-Torque, Hirth joint semi-axle bottom bracket spindle. Light alloy 10 speed chainrings sheared drawn with antifriction treatment. Large chainring with ramps and 8 pins. Choose 34/50t (compact 110mm BCD) or 39/53t (135mm BCD). Ultra-Torque outboard bearing cupsets or integrated adaptors sold separately. Use CP-14021 for 68mm English or CP-14022 for 70mm Italian cupsets. Use CP-14985 for BB30 adaptor or CP-14987 for BB86 adaptor. 695g/711g (110mm/135mm BCD) without 49g BB cupset