The Giant Defy Advanced 1 in Frost Silver represents the "sweet spot" of the Defy range, combining an ultra-lightweight endurance frameset with the effortless precision of electronic shifting. For the 2025/2026 season, the Defy has been stripped of unnecessary weight while gaining vertical compliance, making it one of the most comfortable road bikes ever engineered by Giant. It is built for the rider who wants a fast, responsive bike that can still soothe the nerves and muscles over a 160km gran fondo.
The Frost Silver finish is a sophisticated, metallic paint job that catches the light with a cool, crystalline shimmer, accented by deep charcoal logos. The standout feature of this build is the Shimano 105 Di2 12-speed groupset. This wireless electronic system eliminates the friction of traditional cables, providing perfect, auto-trimmed shifts every time, even under the heavy load of a steep climb.
Frameset & Geometry
Frame: Advanced-Grade Composite, 12x142mm thru-axle, Disc, internal cable routing.
Fork: Advanced-Grade Composite, full-composite OverDrive steerer, 12x100mm thru-axle.
Handlebar: Giant Contact SL D-Fuse, 31.8mm with 8-degree flare.
Stem: Giant Contact AeroLight (Integrated internal cable routing).
Seatpost: Giant D-Fuse Composite, 14mm offset.
Saddle: Giant Approach with pressure relief flow.
Color: Gloss Frost Silver / Black.
Drivetrain & Brakes
Shifters: Shimano 105 Di2 ST-R7170, 2x12-speed Electronic.
Front Derailleur: Shimano 105 Di2 FD-R7150.
Rear Derailleur: Shimano 105 Di2 RD-R7150.
Crankset: Shimano 105, 34/50T (Compact).
Cassette: Shimano 105, 11-34T, 12-speed.
Chain: KMC X12.
Brakes: Shimano 105 Hydraulic Disc.
Rotors: Giant MPH, 160mm (Front & Rear).
Wheels & Tires
Wheelset: Giant P-R2 Disc, Alloy, 12mm thru-axle.
Hubs: Giant alloy, CenterLock.
Spokes: Sapim Stainless Steel.
Tires: Giant Gavia Fondo 1, 700x32c, Tubeless (Factory set-up).
Max Tire Clearance: 38mm.
Key Performance Features
Shimano 105 Di2: Experience the pinnacle of shifting technology. The electronic system ensures that "missed shifts" are a thing of the past, with a battery life that lasts for months and a customizable shifting logic via the Shimano E-Tube app.
Vibration Damping: The D-Fuse system—including the carbon seatpost and handlebar—is designed to act like a micro-suspension system, flexing just enough to neutralize road buzz without sacrificing pedaling efficiency.
Endurance Engineering: By removing the "overbuilt" sections of the previous generation, the new Defy frame is significantly lighter while maintaining a high stiffness-to-weight ratio for climbing.
High-Volume Capability: While it comes with 32mm tires, the 38mm clearance allows you to turn this into an "all-road" machine capable of tackling hard-packed gravel paths and broken pavement with ease.