The Giant Defy Advanced Pro 2 is the benchmark for high-performance endurance road bikes, offering a "less is more" approach that favours functional simplicity over complex gimmicks. For 2026, this model features a significantly lightened Advanced-grade composite frameset that delivers a sublime balance of vertical compliance and lateral stiffness. By raising the front end and shortening the reach, Giant has perfected a geometry that allows riders to maintain a powerful, sustainable position for century rides and demanding gran fondos.
Equipped with the ultra-reliable Shimano 105 12-speed groupset, the Pro 2 provides crisp, mechanical shifting that is preferred by many for its ease of maintenance and tactile feedback. The bike’s ability to smooth out rough tarmac comes from its integrated D-Fuse technology in the carbon seatpost and handlebar, which work together to dissipate road vibration. Paired with Giant’s SLR 2 40 Carbon Disc WheelSystem, this machine offers a lightweight, aero-efficient package that remains stable in crosswinds, making it a versatile choice for everything from smooth Alpine climbs to unpredictable backroads.
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 SL D-Fuse, Alloy (D-shaped profile for vibration damping)
Stem: Giant Contact SL AeroLight
Seatpost: Giant D-Fuse SL, Composite, -5/+15mm Offset
Saddle: Giant Fleet SL (Ergonomic short-nose design)
Color: Stealth Chrome
Drivetrain & Brakes
Shifters: Shimano 105 ST-R7120, 2x12-Speed (Mechanical)
Front Derailleur: Shimano 105 FD-R7100
Rear Derailleur: Shimano 105 RD-R7100
Crankset: Shimano 105, 34/50T
Cassette: Shimano 105, 12-Speed, 11-36T
Chain: KMC X12L-1
Brakes: Shimano 105 Hydraulic Disc
Brake Levers: Shimano 105 Hydraulic (Shimano RT-CL700 Rotors: 160mm Front / 160mm Rear)
Wheels & Tires
Wheelset: Giant SLR 2 40 Carbon Disc WheelSystem (40mm rim depth, hookless)
Hubs: Giant Low Friction Hub, 30T Ratchet Driver, CenterLock, 12mm Thru-Axle
Spokes: Sapim Stainless Steel
Tires: Giant Gavia Fondo 0, Tubeless, 700x32c (Effective width ~33.5mm)
Max Tire Clearance: 40mm
Key Technologies
OverDrive Aero: A D-shaped steerer tube that enables sleek, internal cable routing through the stem while simplifying headset maintenance.
Hookless Rim Technology: Increases wheel durability and allows for a wider inner rim width, enhancing tire volume and grip for a smoother ride.
D-Fuse SLR Seatpost: Specifically engineered to allow up to 7mm of travel at the saddle, effectively neutralizing high-frequency road buzz.
Tubeless System: Factory-fitted tubeless setup reduces the risk of pinch flats and allows for lower tire pressures, significantly improving comfort and traction.