2021 Specialized Roubaix vs 2022 Giant Defy Advanced Pro AX
The XL is the Giant Defy Advanced Pro AX size closest to your 58 Specialized Roubaix. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Giant Defy Advanced Pro AX
Compared with the Specialized Roubaix in 58, the Giant Defy Advanced Pro AX in XL places the top of the head tube 6 mm lower and 6 mm further forward, relative to the bottom bracket. Its wheelbase is 26 mm longer, which can contribute to stability at speed.
- Frame stack
- −6 mm
- Lower front end
- Frame reach
- +6 mm
- Longer frame reach
- Wheelbase
- +26 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- +2 mm
- About the same
The two frames
Specialized Roubaix, 58Giant Defy Advanced Pro AX, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix 58 | Giant Defy Advanced Pro AX XL | Difference |
|---|---|---|---|
| Reach | 392mm | 398 | +6 mm |
| Stack | 630mm | 624 | −6 mm |
| Head tube angle | 73.5° | 72.5 | −1.0° |
| Seat tube angle | 73.5° | 72.5 | −1.0° |
| Chainstay length | 418mm | 420 | +2 mm |
| Wheelbase | 1014mm | 1040 | +26 mm |
| BB drop | 74.5mm | 70 | −5 mm |
| BB height | 268mm | not listed | |
| Standover | 805mm | 856 | +51 mm |
| Seat tube length | 505mm | 565 | +60 mm |
| Fork length | 370mm | not listed | |
| Head tube length | 170mm | 225 | +55 mm |
| Effective top tube | not listed | 595 |
Differences are the Giant Defy Advanced Pro AX minus the Specialized Roubaix. Full charts: 2021 Specialized Roubaix, 2022 Giant Defy Advanced Pro AX.
Where each sits in its class
Specialized RoubaixGiant Defy Advanced Pro AX
Each bike is ranked against the other road bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Specialized RoubaixRoubaix | Giant Defy Advanced Pro AXAdvanced Pro 2 AX |
|---|---|---|
| Fork | Specialized Future Shock 1.5 | Giant OverDrive 2 |
| Shifter | Shimano Tiagra | SRAM Rival |
| Derailleur | Shimano Tiagra | SRAM Rival AXS |
| Cassette | Shimano Tiagra | SRAM Rival |
| Chain | KMC X10 | SRAM Rival D1 |
| Crankset | Praxis Alba | SRAM Rival D1 Wide |
| Wheelset | Specialized AXIS Elite | Giant SLR 2 36 Carbon Disc |
| Tire | Specialized Espoir Sport | Giant Gavia Fondo 1 |
| Handlebar | Specialized Hover | Giant Contact SL |
| Stem | Specialized Future | Giant Contact SL |
| Seatpost | Specialized S-Works Pave | Giant D-Fuse SL |
| Saddle | Specialized Power Sport | Giant Fleet SL |
| Frame | not listed | Giant Defy |
| Bottom bracket | not listed | SRAM DUB GX |
| Brake | not listed | SRAM Rival AXS E1 |
| Rotor | not listed | SRAM Paceline |
| Grips | not listed | Lite 3.0 |
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