The Giant Defy Advanced Pro 0 is a carbon road bike engineered for riders who cover serious distance on varied roads. The Advanced-Grade Composite frame pairs with an Advanced SL-Grade Composite fork and a D-Fuse handlebar to dampen road vibration along the way — keeping your arms and shoulders fresher over long rides compared to a traditionally stiff race geometry.
The drivetrain is built around the Shimano Ultegra Di2 electronic groupset with 12 speeds. Shifting is triggered by a button rather than a mechanical cable, so gear changes are instantaneous and self-adjusting. The 11-34 cassette provides a wide range to handle steep climbs without spinning out on fast descents. Hydraulic disc brakes round out the package with modulated, reliable braking regardless of weather.
A standout feature is the Giant Power Pro power meter, integrated directly into the Shimano Ultegra crankset. It measures power output from both legs independently — useful for identifying imbalances and training with accurate data, all without adding a separate accessory. The Giant SLR 1 36 Carbon Disc wheels use hookless carbon rims at 36 mm depth, factory-fitted with 700c x 32 mm tubeless tyres that can be run at lower pressures for improved grip and ride quality.
Available in Interstellar and in five sizes (S, M, ML, L, XL), the Defy Advanced Pro 0 is aimed at committed road cyclists looking for an endurance-oriented bike that performs on back-to-back long rides without sacrificing sharp handling.
