2020 Specialized Roubaix Comp Shimano vs 2022 Giant Defy Advanced Pro AX
The ML is the Giant Defy Advanced Pro AX size closest to your 54 Specialized Roubaix Comp Shimano. 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 Comp Shimano in 54, the Giant Defy Advanced Pro AX in ML places the top of the head tube at about the same height and 5 mm further forward, relative to the bottom bracket. Its wheelbase is 22 mm longer, which can contribute to stability at speed.
- Frame stack
- +1 mm
- About the same height
- Frame reach
- +5 mm
- Longer frame reach
- Wheelbase
- +22 mm
- Longer: steadier at speed
- Head angle
- −0.3°
- About the same head angle
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Specialized Roubaix Comp Shimano, 54Giant Defy Advanced Pro AX, MLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix Comp Shimano 54 | Giant Defy Advanced Pro AX ML | Difference |
|---|---|---|---|
| Reach | 376mm | 381 | +5 mm |
| Stack | 585mm | 586 | +1 mm |
| Head tube angle | 72.75° | 72.5 | −0.3° |
| Seat tube angle | 74° | 73.0 | −1.0° |
| Chainstay length | 415mm | 420 | +5 mm |
| Wheelbase | 988mm | 1010 | +22 mm |
| BB drop | 76mm | 70 | −6 mm |
| BB height | 266mm | not listed | |
| Standover | 762mm | 816 | +54 mm |
| Seat tube length | 465mm | 515 | +50 mm |
| Fork length | 370mm | not listed | |
| Head tube length | 125mm | 185 | +60 mm |
| Effective top tube | not listed | 560 |
Differences are the Giant Defy Advanced Pro AX minus the Specialized Roubaix Comp Shimano. Full charts: 2020 Specialized Roubaix Comp Shimano, 2022 Giant Defy Advanced Pro AX.
Where each sits in its class
Specialized Roubaix Comp ShimanoGiant 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 Roubaix Comp Shimano | Giant Defy Advanced Pro AXAdvanced Pro 2 AX |
|---|---|---|
| Frame | not listed | Giant Defy |
| Fork | not listed | Giant OverDrive 2 |
| Shifter | not listed | SRAM Rival |
| Derailleur | not listed | SRAM Rival AXS |
| Cassette | not listed | SRAM Rival |
| Chain | not listed | SRAM Rival D1 |
| Crankset | not listed | SRAM Rival D1 Wide |
| Bottom bracket | not listed | SRAM DUB GX |
| Wheelset | not listed | Giant SLR 2 36 Carbon Disc |
| Tire | not listed | Giant Gavia Fondo 1 |
| Brake | not listed | SRAM Rival AXS E1 |
| Rotor | not listed | SRAM Paceline |
| Handlebar | not listed | Giant Contact SL |
| Stem | not listed | Giant Contact SL |
| Grips | not listed | Lite 3.0 |
| Seatpost | not listed | Giant D-Fuse SL |
| Saddle | not listed | Giant Fleet SL |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
