2021 Specialized Roubaix Comp vs 2021 Giant Defy Advanced Pro
The L is the Giant Defy Advanced Pro size closest to your 58 Specialized Roubaix Comp. 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
Compared with the Specialized Roubaix Comp in 58, the Giant Defy Advanced Pro in L places the top of the head tube 25 mm lower and about as far forward, relative to the bottom bracket.
- Frame stack
- −25 mm
- Lower front end
- Frame reach
- −2 mm
- About the same reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- n/a
- One of the bikes has no number for this
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
Only the Specialized Roubaix Comp is drawn. The Giant Defy Advanced Pro numbers we have for size L are missing the head angle, seat angle, chainstay length and wheelbase.
Geometry side by side
| Measurement | Specialized Roubaix Comp 58 | Giant Defy Advanced Pro L | Difference |
|---|---|---|---|
| Reach | 392mm | 390 | −2 mm |
| Stack | 630mm | 605 | −25 mm |
| Head tube angle | 73.5° | not listed | |
| Seat tube angle | 73.5° | not listed | |
| Chainstay length | 418mm | not listed | |
| Wheelbase | 1014mm | not listed | |
| BB drop | 74.5mm | not listed | |
| BB height | 268mm | not listed | |
| Standover | 805mm | not listed | |
| Seat tube length | 505mm | not listed | |
| Fork length | 370mm | not listed | |
| Head tube length | 170mm | not listed |
Differences are the Giant Defy Advanced Pro minus the Specialized Roubaix Comp. Full charts: 2021 Specialized Roubaix Comp, 2021 Giant Defy Advanced Pro.
Where each sits in its class
Specialized Roubaix CompGiant Defy Advanced Pro
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 CompComp | Giant Defy Advanced ProAdvanced Pro 2 |
|---|---|---|
| Fork | Specialized Future Shock 1.5 | Giant OverDrive 2 |
| Shifter | Shimano Ultegra | Shimano Ultegra |
| Derailleur | Shimano Ultegra R8000, Shimano GRX RX800 | Shimano Ultegra |
| Cassette | Shimano Ultegra | Shimano cassette |
| Chain | Shimano Ultegra | KMC X11SL-1 |
| Crankset | Shimano Ultegra R8000 | Shimano Ultegra Mid Compact |
| Wheelset | DT Swiss R470 | Giant SLR-2 42 |
| Tire | Specialized Turbo Pro | Giant Gavia Fondo 1 |
| Brake | Shimano Ultegra R8070 | Shimano Ultegra |
| Handlebar | Specialized Hover | Giant D-Fuse SLR |
| Stem | Specialized Future | Giant Contact SL |
| Seatpost | Specialized S-Works Pave | Giant D-Fuse SLR |
| Saddle | Specialized Power | Giant Contact Fleet SL |
| Frame | not listed | Giant Defy |
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