2025 Specialized Roubaix SL8 Pro vs 2027 Giant Contend AR
The ML is the Giant Contend AR size closest to your 54 Specialized Roubaix SL8 Pro. 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 Pro in 54, the Giant Contend AR in ML places the top of the head tube 10 mm higher and about as far forward, relative to the bottom bracket. Its wheelbase is 10 mm longer, which can contribute to stability at speed.
- Frame stack
- +10 mm
- Higher front end
- Frame reach
- +2 mm
- About the same reach
- Wheelbase
- +10 mm
- Longer: steadier at speed
- Head angle
- +0.2°
- About the same head angle
- Chainstays
- +2 mm
- About the same
The two frames
Specialized Roubaix SL8 Pro, 54Giant Contend AR, MLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL8 Pro 54 | Giant Contend AR ML | Difference |
|---|---|---|---|
| Reach | 381mm | 383 | +2 mm |
| Stack | 585mm | 595.3 | +10 mm |
| Head tube angle | 72.3° | 72.5° | +0.2° |
| Seat tube angle | 74° | 73.0° | −1.0° |
| Chainstay length | 420mm | 422 | +2 mm |
| Wheelbase | 1005mm | 1015.4 | +10 mm |
| BB drop | 78mm | 80 | +2 mm |
| BB height | 270mm | not listed | |
| Standover | 766mm | 798.5 | +33 mm |
| Seat tube length | 465mm | 535 | +70 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 122mm | 170 | +48 mm |
Differences are the Giant Contend AR minus the Specialized Roubaix SL8 Pro. Full charts: 2025 Specialized Roubaix SL8 Pro, 2027 Giant Contend AR.
Where each sits in its class
Specialized Roubaix SL8 ProGiant 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 SL8 ProSL8 Pro | Giant Contend AR1 |
|---|---|---|
| Fork | Specialized Future Shock 3.3 | Giant Advanced-Grade |
| Shifter | Shimano Ultegra R8170 Di2 | Shimano CUES U6030 |
| Derailleur | Shimano Ultegra R8150 Di2 | Shimano CUES U6030, Shimano CUES U6000 |
| Cassette | Shimano Ultegra | Shimano CS-LG400 |
| Chain | Shimano XT M8100 | KMC X11 |
| Crankset | Shimano Ultegra R8100 | Shimano CUES FC-U6030-1 |
| Wheelset | Roval Terra CL II | Giant P-AR |
| Tire | Specialized S-Works Mondo 2BR | Giant Gavia Fondo 2 |
| Brake | Shimano Ultegra | Shimano CUES U6030 F]160 R]160 |
| Stem | Specialized Future | Giant Contact Aerolight |
| Seatpost | Specialized S-Works Pave Seat post | D-Fuse |
| Saddle | Specialized Power Pro Mirror | Giant Approach |
| Frame | not listed | Giant ALUXX-SL Grade |
| Bottom bracket | not listed | Shimano BB-RS501 |
| Rim | not listed | Giant P-AR |
| Handlebar | not listed | Giant Contact |
| Bar tape | not listed | Giant Cork Tape |
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