2024 Specialized Roubaix SL8 vs 2025 Giant Contend AR
The XL is the Giant Contend AR size closest to your 61 Specialized Roubaix SL8. 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 Contend AR
Compared with the Specialized Roubaix SL8 in 61, the Giant Contend AR in XL places the top of the head tube 27 mm lower and 3 mm further back, relative to the bottom bracket. Its wheelbase is 4 mm longer, which can contribute to stability at speed.
- Frame stack
- −27 mm
- Lower front end
- Frame reach
- −3 mm
- Shorter frame reach
- Wheelbase
- +4 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- −1 mm
- About the same
The two frames
Specialized Roubaix SL8, 61Giant Contend AR, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL8 61 | Giant Contend AR XL | Difference |
|---|---|---|---|
| Reach | 403mm | 400 | −3 mm |
| Stack | 665mm | 638 | −27 mm |
| Head tube angle | 73.5° | 72.5° | −1.0° |
| Seat tube angle | 73.5° | 73.0° | −0.5° |
| Chainstay length | 423mm | 422 | −1 mm |
| Wheelbase | 1042mm | 1046 | +4 mm |
| BB drop | 78mm | 80 | +2 mm |
| BB height | 271mm | not listed | |
| Standover | 847mm | 856 | +9 mm |
| Seat tube length | 545mm | 565 | +20 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 202mm | 215 | +13 mm |
Differences are the Giant Contend AR minus the Specialized Roubaix SL8. Full charts: 2024 Specialized Roubaix SL8, 2025 Giant Contend AR.
Where each sits in its class
Specialized Roubaix SL8Giant Contend AR
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 SL8S-Works SL8 | Giant Contend AR4 |
|---|---|---|
| Frame | Specialized Roubaix | Giant ALUXX-grade |
| Fork | Specialized Future Shock 3.3 | Giant Advanced-Grade |
| Shifter | SRAM Red eTap AXS | Shimano Claris |
| Derailleur | SRAM RED eTAP AXS | Shimano Claris |
| Cassette | SRAM XG 1290 | Shimano CS-HG50 Deore |
| Chain | SRAM Red | KMC Z72 |
| Crankset | SRAM RED AXS | FSA Tempo |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | Roval Terra CLX II | not listed |
| Tire | Specialized S-Works Mondo 2BR | Giant S-R3 AC |
| Brake | SRAM RED | Tektro MD-C550, Shimano Claris |
| Handlebar | Specialized Hover Carbon | Giant Connect XS:40cm |
| Stem | Specialized S-Works Future | Giant Sport XS:80mm |
| Seatpost | Specialized S-Works Pave Seat post | Giant D-Fuse |
| Saddle | Specialized S-Works Power | Giant Approach |
| Rim | not listed | Giant S-R2 |
| Grips | not listed | Velo cork tape |
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