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D-Fuse Technology

Controlled Compliance

Giant first introduced its breakthrough D-Fuse technology 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 Composite Tubing

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