The Giant Defy Advanced 3 in Good Grey is an endurance-focused carbon road bike designed for riders who prioritize comfort and versatility without sacrificing performance. Built around an Advanced-grade composite frame, this tenth-generation Defy has been re-engineered to be lighter and more efficient while maintaining its reputation for a smooth ride. The Good Grey finish provides a clean, understated, and modern aesthetic that perfectly matches the bike's "all-road" endurance persona, making it a sophisticated choice for long-distance sportives and weekend adventures alike.
This model serves as a high-value entry point into the carbon road world, utilizing a Shimano Tiagra 10-speed groupset paired with hydraulic disc brakes for reliable, all-weather stopping power. The bike’s endurance geometry features a slightly taller headtube and shorter reach to reduce strain on the back and neck during long hours in the saddle. Key to its comfort is the D-Fuse technology found in the carbon seatpost and handlebar, which are specifically shaped to flex under load to absorb road buzz. With clearance for tires up to 38mm, the Defy Advanced 3 is equally capable on smooth asphalt as it is on gritty backroads or light gravel.
Frameset & Geometry
Frame: Advanced-Grade Composite, 12x142mm thru-axle, Disc
Fork: Advanced-Grade Composite, Full-Composite OverDrive Steerer, 12x100mm thru-axle, Disc
Handlebar: Giant Contact SL D-Fuse, 31.8mm, Alloy
Stem: Giant Contact AeroLight, -10 Degree (Internal Cable Routing)
Seatpost: Giant D-Fuse, Composite, 14mm Offset
Saddle: Giant Approach
Color: Good Grey
Drivetrain & Brakes
Shifters: Shimano Tiagra ST-4720, 2x10-speed
Front Derailleur: Shimano Tiagra
Rear Derailleur: Shimano Tiagra
Crankset: Shimano Tiagra, 34/50T
Cassette: Shimano Tiagra, 11-34T, 10-speed
Chain: KMC X10 with Missing Link
Brakes: Shimano Tiagra Hydraulic Disc, Giant MPH rotors ([F] 160mm / [R] 160mm)
Brake Levers: Shimano Tiagra Hydraulic
Wheels & Tires
Wheelset: Giant S-R2 Disc Wheelset, Alloy, Tubeless Ready
Hubs: Giant Alloy, 12mm Thru-Axle
Spokes: Sapim Leader
Tires: Giant Gavia Fondo 1, 700x32c, Tubeless, Folding
Max Tire Clearance: 38mm
Key Technologies
Advanced Composite: High-performance grade raw carbon material is used to produce this custom frame material in Giant's own composite factory with a high stiffness-to-weight ratio.
D-Fuse Technology: Proprietary "D" shaped seatpost and handlebar work together to dampen vibrations and absorb road shock, resulting in a smoother, more compliant ride.
OverDrive: Giant’s original oversized fork steerer tube technology designed to provide precise front-end steering performance and stiffness.
Compact Road Design: A downward sloping top tube creates smaller front and rear triangles for a lighter, stiffer bike, making it easier for riders of all sizes to have a perfect fit.