2025 Specialized Roubaix SL8 FACT 12R Carbon vs 2027 Giant Contend AR
The XL is the Giant Contend AR size closest to your 58 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 58, the Giant Contend AR in XL places the top of the head tube 8 mm higher and about as far forward, relative to the bottom bracket. Its wheelbase is 15 mm longer, which can contribute to stability at speed.
- Frame stack
- +8 mm
- Higher front end
- Frame reach
- +3 mm
- About the same reach
- Wheelbase
- +15 mm
- Longer: steadier at speed
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- −1 mm
- About the same
The two frames
Specialized Roubaix SL8 FACT 12R Carbon, 58Giant Contend AR, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL8 FACT 12R Carbon 58 | Giant Contend AR XL | Difference |
|---|---|---|---|
| Reach | 397mm | 399.9 | +3 mm |
| Stack | 630mm | 638.2 | +8 mm |
| Head tube angle | 73° | 72.5° | −0.5° |
| Seat tube angle | 73.5° | 73.0° | −0.5° |
| Effective top tube | 584mm | not listed | |
| Chainstay length | 423mm | 422 | −1 mm |
| Wheelbase | 1031mm | 1045.8 | +15 mm |
| BB drop | 78mm | 80 | +2 mm |
| BB height | 271mm | not listed | |
| Standover | 809mm | 843.9 | +35 mm |
| Seat tube length | 505mm | 585 | +80 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 168mm | 215 | +47 mm |
Differences are the Giant Contend AR minus the Specialized Roubaix SL8 FACT 12R Carbon. Full charts: 2025 Specialized Roubaix SL8 FACT 12R Carbon, 2027 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 AR1 |
|---|---|---|
| Fork | Specialized Future Shock 3.3 | Giant Advanced-Grade |
| Seatpost | Specialized S-Works Pave Seat post | D-Fuse |
| Frame | not listed | Giant ALUXX-SL Grade |
| Shifter | not listed | Shimano CUES U6030 |
| Derailleur | not listed | Shimano CUES U6030, Shimano CUES U6000 |
| Cassette | not listed | Shimano CS-LG400 |
| Chain | not listed | KMC X11 |
| Crankset | not listed | Shimano CUES FC-U6030-1 |
| Bottom bracket | not listed | Shimano BB-RS501 |
| Wheelset | not listed | Giant P-AR |
| Tire | not listed | Giant Gavia Fondo 2 |
| Rim | not listed | Giant P-AR |
| Brake | not listed | Shimano CUES U6030 F]160 R]160 |
| Handlebar | not listed | Giant Contact |
| Stem | not listed | Giant Contact Aerolight |
| Bar tape | not listed | Giant Cork Tape |
| Saddle | not listed | Giant Approach |
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