Giant Defy Advanced 2025 geometry
Size chart for fitting. If this bike already feels right, find others with a similar riding position (size L). Category: road-endurance.
| Size | Stack | Reach | Head tube angle | Seat tube angle | Chainstay | Wheelbase | BB drop |
|---|---|---|---|---|---|---|---|
| L | 615 mm | 390 mm | 72.5° | 73.0° | 420 mm | 1035 mm | 73 mm |
| M | 575 mm | 378 mm | 72.0° | 73.5° | 420 mm | 1015 mm | 75 mm |
| ML | 595 mm | 384 mm | 72.5° | 73.0° | 420 mm | 1022 mm | 75 mm |
| S | 555 mm | 372 mm | 71.5° | 74.0° | 420 mm | 1008 mm | 75 mm |
| XL | 635 mm | 396 mm | 73.0° | 72.5° | 420 mm | 1045 mm | 73 mm |
| XS | 540 mm | 365 mm | 71.0° | 74.0° | 420 mm | 1000 mm | 75 mm |
Similar bikes
Closest matches to this riding position — free, no login.
Size guidance
Stack and reach describe the frame's cockpit envelope better than traditional seat-tube sizing. If you know your preferred stack/reach from a bike that already fits, search within a few millimeters first, then check head angle and chainstay for handling feel. See the glossary for stack, reach, and HTA.