Defy 2025
Defy Advanced SL
The 2025 Giant Defy Advanced SL is a road bike offered in 6 sizes, XS to XL. Reach runs from 369 to 402 mm and stack from 527 to 615 mm. It ships with SRAM RED and Cadex 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 SL
- Type
- Road
- Sizes
- XS, S, M, ML, L, and XL
- Verified measurements
- 63 of 66
- Verified against
- giant-bicycles.com and at least one independent source
- Last checked
2025 Giant Defy Advanced SL drawn to scale
2025 Giant Defy Advanced SL geometry by size
| Measurement | XS | S | M | ML | L | XL |
|---|---|---|---|---|---|---|
| Reach(mm) | 369mm | 375mm | 380mm | 384mm | 393mm | 402mm |
| Stack(mm) | 527mm | 541mm | 558mm | 577mm | 596mm | 615mm |
| Head tube angle(°) | 70.5° | 71.8° | 72.5° | 72.5° | 72.5° | 72.5° |
| Seat tube angle(°) | 74.5° | 74.0° | 73.5° | 73.0° | 73.0° | 73.0° |
| Effective top tube(mm) | 515mm | 530mm | 545mm | not yet verified | 575mm | 595mm |
| Chainstay length(mm) | 420mm | 420mm | 420mm | 420mm | 420mm | 420mm |
| Wheelbase(mm) | 995mm | 994mm | 998mm | 1010mm | 1025mm | 1040mm |
| BB drop(mm) | 75mm | 75mm | 75mm | 70mm | 70mm | 70mm |
| Standover(mm) | 705mm | 733mm | 762mm | 796mm | 814mm | 841mm |
| Seat tube length(mm) | 410mm | 445mm | 480mm | 515mm | 535mm | 565mm |
| Head tube length(mm) | not yet verified | not yet verified | 150mm | 175mm | 195mm | 215mm |
Last checked .
2025 Giant Defy stock build
21 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 SL come in?
It comes in 6 sizes: XS, S, M, ML, L, and XL.
What are the reach and stack of the 2025 Giant Defy Advanced SL in size ML?
In size ML, reach is 384 mm and stack is 577 mm.
What is the head tube angle of the 2025 Giant Defy Advanced SL?
The head tube angle is 72.5 degrees in size ML.
What does the 2025 Giant Defy Advanced SL 0 ship with?
The stock build includes Giant Defy, Giant Advanced SL Composite OverDrive Aero, SRAM RED, and Cadex 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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