D-Fuse technology was first introduced in 2014 as a seatpost for pro-level cyclocross bikes. It was designed to absorb low-amplitude shocks and high-amplitude vibrations to deliver a smoother ride on variable terrain. The heart of this pioneering concept is its distinctive “D-shaped” tubing with a round front and flattened rear section. Following its success in cyclocross, including multiple world championship titles, D-Fuse technology was expanded to endurance road and gravel bikes—and later to the front half of the bicycle. Together, the handlebar and seatpost add compliance at two key contact points without the unwanted complexity or weight associated with pivots or inserts. There are several D-Fuse handlebar models currently available. Each is lighter than round-shaped handlebar options and up to 40 percent more compliant than previous-generation D-Fuse handlebars.

D-Fuse Seatpost

A D-shaped composite shaft absorbs shocks and vibrations. With up to 7mm of flex, this engineered compliance produces a smooth ride quality to help minimize fatigue.

D-Shaped Tubing

D-Fuse handlebars are made with D-shaped tubing on the tops for added compliance and hand comfort.


Contact SLR/SL D-Fuse handlebars on the Avail Advanced range and Contact XR D-Fuse handlebars on the Devote range provide lightweight construction coupled with exceptional vertical compliance for an enhanced riding experience.


The handlebars offer greater downward compliance compared to traditional round-shaped handlebars, effectively absorbing road shock and vibration.


The new generation of Contact SLR D-Fuse handlebars offers up to 2% more upward stiffness compared to its predecessor, enhancing efficiency in cornering, sprinting, and climbing.

Bikes Featuring D-Fuse Technology