Defy Advanced Pro 0

The Giant Defy Advanced Pro 0 is a high-performance endurance road machine engineered to maximize speed while minimizing rider fatigue. Built on a lightweight Advanced-grade composite frameset, it features a refined geometry that strikes a balance between race-bike responsiveness and all-day comfort. The bike’s signature D-Fuse technology—integrated into both the carbon handlebar and seatpost—works as a system to dampen road vibrations and shocks, making it exceptionally capable on rough tarmac and long-distance sportives.

This flagship "Pro 0" build is equipped with the latest Shimano Ultegra Di2 electronic drivetrain, providing lightning-fast, precise shifting at the touch of a button. To help you train and pace with professional accuracy, the bike comes standard with an integrated Giant Power Pro power meter. The inclusion of the Giant SLR 0 40 Carbon WheelSystem ensures the bike is incredibly efficient on climbs and stable in crosswinds, while the generous tire clearance (up to 40mm) allows for a seamless transition from smooth pavement to light gravel.

Frameset & Geometry

Frame: Advanced-Grade Composite, 12x142mm Thru-Axle, Disc

Fork: Advanced SL-Grade Composite, Full-Composite OverDrive Aero Steerer, 12x100mm Thru-Axle

Handlebar: Giant Contact SLR D-Fuse, Carbon, 8-degree Flare

Stem: Giant Contact SL AeroLight

Seatpost: Giant D-Fuse SLR, Composite, -5/+15mm Offset

Saddle: Giant Fleet SL (with Carbon Composite base)

Color: Mariana Blue

Drivetrain & Brakes

Shifters: Shimano Ultegra Di2 ST-R8170, 2x12-Speed (Electronic)

Front Derailleur: Shimano Ultegra Di2 FD-R8150

Rear Derailleur: Shimano Ultegra Di2 RD-R8150

Crankset: Shimano Ultegra, 34/50T with Giant Power Pro Power Meter Cassette: Shimano Ultegra, 12-Speed, 11-34T

Chain: Shimano Ultegra

Brakes: Shimano Ultegra Di2 Hydraulic Disc

Brake Levers: Shimano Ultegra Di2 (Shimano RT-CL800 Rotors: 160mm Front / 160mm Rear)

Wheels & Tires

Wheelset: Giant SLR 0 40 Carbon Disc WheelSystem (40mm Rim Depth)

Hubs: Giant Low Friction Hub, 40T Ratchet Driver, CenterLock, 12mm Thru-Axle

Spokes: Aero Carbon Spokes

Tires: CADEX Classics, Tubeless, 700x32c (Effective width ~33.5mm)

Max Tire Clearance: 40mm