2024 Specialized Roubaix SL8 FACT 12R Carbon vs 2025 Giant Contend AR
The ML is the Giant Contend AR size closest to your 54 Specialized Roubaix SL8 FACT 12R Carbon. 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 FACT 12R Carbon 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 FACT 12R Carbon, 54Giant Contend AR, MLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL8 FACT 12R Carbon 54 | Giant Contend AR ML | Difference |
|---|---|---|---|
| Reach | 381mm | 383 | +2 mm |
| Stack | 585mm | 595 | +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 | +10 mm |
| BB drop | 78mm | 80 | +2 mm |
| BB height | 270mm | not listed | |
| Standover | 766mm | 810 | +44 mm |
| Seat tube length | 465mm | 515 | +50 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 122mm | 170 | +48 mm |
Differences are the Giant Contend AR minus the Specialized Roubaix SL8 FACT 12R Carbon. Full charts: 2024 Specialized Roubaix SL8 FACT 12R Carbon, 2025 Giant Contend AR.
Where each sits in its class
Specialized Roubaix SL8 FACT 12R CarbonGiant 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 FACT 12R CarbonS-Works SL8 FACT 12R Carbon | Giant Contend AR4 |
|---|---|---|
| Fork | Specialized Future Shock 3.3 | Giant Advanced-Grade |
| Seatpost | Specialized S-Works Pave Seat post | Giant D-Fuse |
| Frame | not listed | Giant ALUXX-grade |
| Shifter | not listed | Shimano Claris |
| Derailleur | not listed | Shimano Claris |
| Cassette | not listed | Shimano CS-HG50 Deore |
| Chain | not listed | KMC Z72 |
| Crankset | not listed | FSA Tempo |
| Tire | not listed | Giant S-R3 AC |
| Rim | not listed | Giant S-R2 |
| Brake | not listed | Tektro MD-C550, Shimano Claris |
| Handlebar | not listed | Giant Connect XS:40cm |
| Stem | not listed | Giant Sport XS:80mm |
| Grips | not listed | Velo cork tape |
| Saddle | not listed | Giant Approach |
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