Defy 2025
Defy Advanced Pro
The 2025 Giant Defy Advanced Pro is a road bike offered in 5 sizes, XS to XL. Reach runs from 369 to 402 mm and stack from 527 to 615 mm. It ships with Shimano Ultegra R8150 and Giant SLR 1 36.
Every number on this page was confirmed by at least two independent sources. Where the catalog cannot yet stand behind a figure, the cell says so instead of guessing. Verified against giant-bicycles.com and at least one independent source.
Key facts
- Brand
- Giant
- Model
- Defy
- Model year
- 2025
- Frame
- Advanced Pro
- Type
- Road
- Sizes
- XS, S, M, L, and XL
- Verified measurements
- 48 of 50
- Verified against
- giant-bicycles.com and at least one independent source
- Last checked
2025 Giant Defy Advanced Pro drawn to scale
2025 Giant Defy Advanced Pro geometry by size
| Measurement | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Reach(mm) | 369mm | 375mm | 380mm | 393mm | 402mm |
| Stack(mm) | 527mm | 541mm | 558mm | 596mm | 615mm |
| Head tube angle(°) | 70.5° | 71.8° | 72.5° | 72.5° | 72.5° |
| Seat tube angle(°) | 74.5° | 74.0° | 73.5° | 73.0° | 73.0° |
| Chainstay length(mm) | 420mm | 420mm | 420mm | 420mm | 420mm |
| Wheelbase(mm) | 995mm | 994mm | 998mm | 1025mm | 1040mm |
| BB drop(mm) | 75mm | 75mm | 75mm | 70mm | 70mm |
| Standover(mm) | 705mm | 733mm | 762mm | 814mm | 841mm |
| Seat tube length(mm) | 410mm | 445mm | 480mm | 535mm | 565mm |
| Head tube length(mm) | not yet verified | not yet verified | 150mm | 195mm | 215mm |
Last checked .
2025 Giant Defy stock build
19 parts. Specs shown only where two or more sources agree.
Frame
Suspension
Drivetrain
Wheels & Tires
Brakes
Cockpit
Seatpost & Saddle
Quick answers
What sizes does the 2025 Giant Defy Advanced Pro come in?
It comes in 5 sizes: XS, S, M, L, and XL.
What are the reach and stack of the 2025 Giant Defy Advanced Pro in size M?
In size M, reach is 380 mm and stack is 558 mm.
What is the head tube angle of the 2025 Giant Defy Advanced Pro?
The head tube angle is 72.5 degrees in size M.
What does the 2025 Giant Defy Advanced Pro 0 ship with?
The stock build includes Giant Defy, Giant Advanced SL Composite OverDrive Aero, Shimano Ultegra R8170, and Giant SLR 1 36.
Which years of the Giant Defy are in the catalog?
The catalog has the Giant Defy for 2025 and 2026.
Other frames of the 2025 Defy
Other years of the Defy
Ride a Defy? Keep it in your garage.
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