Light and strong headsets for tapered head tubes. 1.1/8” semi-integrated upper cup and 1.5” a-head lower cup for tappered fork steerer. With Ride Your Way custom top cap. Alu cups (bottom drilled for weight reduction). Sealed 45°x45° Cr-Mo bearings with anti-rust titanium finish. Designed to fit Transition frames and most of the other frames with the same head tube standard.