2025 Giant Contend AR vs 2023 Specialized Roubaix SL8 Comp
The 58 is the Specialized Roubaix SL8 Comp size closest to your XL Giant Contend AR. 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 Specialized Roubaix SL8 Comp
Compared with the Giant Contend AR in XL, the Specialized Roubaix SL8 Comp in 58 places the top of the head tube 8 mm lower and 3 mm further back, relative to the bottom bracket. Its wheelbase is 15 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −8 mm
- Lower front end
- Frame reach
- −3 mm
- Shorter frame reach
- Wheelbase
- −15 mm
- Shorter: quicker to change direction
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- +1 mm
- About the same
The two frames
Giant Contend AR, XLSpecialized Roubaix SL8 Comp, 58Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Giant Contend AR XL | Specialized Roubaix SL8 Comp 58 | Difference |
|---|---|---|---|
| Reach | 400 | 397 | −3 mm |
| Stack | 638 | 630 | −8 mm |
| Head tube angle | 72.5° | 73 | +0.5° |
| Seat tube angle | 73.0° | 73.5 | +0.5° |
| Chainstay length | 422 | 423 | +1 mm |
| Wheelbase | 1046 | 1031 | −15 mm |
| BB drop | 80 | not listed | |
| Standover | 856 | 809 | −47 mm |
| Seat tube length | 565 | 505 | −60 mm |
| Head tube length | 215 | 168 | −47 mm |
| Effective top tube | not listed | 584 | |
| BB height | not listed | 271 |
Differences are the Specialized Roubaix SL8 Comp minus the Giant Contend AR. Full charts: 2025 Giant Contend AR, 2023 Specialized Roubaix SL8 Comp.
Where each sits in its class
Giant Contend ARSpecialized Roubaix SL8 Comp
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 | Giant Contend AR4 | Specialized Roubaix SL8 CompSL8 Comp |
|---|---|---|
| Frame | Giant ALUXX-grade | Specialized FACT 10R |
| Fork | Giant Advanced-Grade | Specialized Future Shock 3.2 |
| Shifter | Shimano Claris | Shimano 105 |
| Derailleur | Shimano Claris | Shimano 105 |
| Cassette | Shimano CS-HG50 Deore | Shimano 105 |
| Chain | KMC Z72 | Shimano 105 |
| Crankset | FSA Tempo | Shimano 105 |
| Tire | Giant S-R3 AC | S Works Mondo, S Works Mondo 2BR |
| Rim | Giant S-R2 | not listed |
| Brake | Tektro MD-C550, Shimano Claris | Shimano 105 |
| Handlebar | Giant Connect XS:40cm | Specialized Hover |
| Stem | Giant Sport XS:80mm | Specialized Future Stem |
| Grips | Velo cork tape | not listed |
| Seatpost | Giant D-Fuse | Specialized S-Works Pavé |
| Saddle | Giant Approach | Specialized Body Geometry Power Sport |
| Chainring | not listed | Shimano 105 |
| Bottom bracket | not listed | Shimano 105 |
| Wheelset | not listed | DT Swiss G540 |
| Rotor | not listed | Shimano 105 |
| Bar tape | not listed | Supacaz Super Sticky Kush |
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