The D-Fuse seatpost features a D-shaped composite shaft that absorbs road shocks and vibration. With up to 12mm of flex, this engineered compliance produces a smooth ride quality to help minimize fatigue.

D-Fuse handlebars are made with D-shaped tubing that’s similar to the design of the D-Fuse seatpost.

Contact SLR D-Fuse handlebars (featured on some Defy models) are 6% lighter than Contact SLR round bars. Contact XR D-Fuse handlebar (featured on Revolt models) are 5% lighter than the Contact SL round bars.

10% more “pushing” (downward) compliance compared to round shaped Contact handlebars for a smoother ride quality.

Up to 30% more “pulling” (upward) stiffness compared to the round shaped Contact handlebar for cornering, sprinting and climbing efficiency.