Giant's Advanced Composite Technology uses high-performance carbon material to produce this custom frame with a high stiffness-to-weight ratio.
The front triangle of these framesets is assembled and molded as one continuous piece in a proprietary manufacturing process called Modified Monocoque Construction.
Compact Road Design, introduced by Giant with the professional Team ONCE in the 1990s, revolutionized the look and feel of high-performance road bikes forever. A downward sloping toptube (from the headtube to the seattube) creates smaller front and rear triangles for a lighter, stiffer bike. It also makes it easier for riders of all sizes to have a perfect fit.
The D-Fuse seatpost and handlebar were designed to function as a system, absorbing road shocks and vibrations so you can ride farther, faster.
OverDrive Aero, found inside the head tube of the Defy, Propel and TCR ranges, features a D-shaped fork steerer tube and corresponding spacers. This provides an extremely aerodynamic, easier to service system of internally routed brake and derailleur cables.