2026 Specialized Roubaix SL8 Sport vs 2027 Giant Contend AR
The XL is the Giant Contend AR size closest to your 58 Specialized Roubaix SL8 Sport. 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 Sport 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.
- Frame stack
- +8 mm
- Higher front end
- Frame reach
- +3 mm
- About the same reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- −1 mm
- About the same
The two frames
We can't draw these frames yet. The Specialized Roubaix SL8 Sport numbers we have for size 58 are missing the wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | Specialized Roubaix SL8 Sport 58 | Giant Contend AR XL | Difference |
|---|---|---|---|
| Reach | 397 | 399.9 | +3 mm |
| Stack | 630 | 638.2 | +8 mm |
| Head tube angle | 73 | 72.5° | −0.5° |
| Seat tube angle | 73.5 | 73.0° | −0.5° |
| Effective top tube | 584 | not listed | |
| Chainstay length | 423 | 422 | −1 mm |
| BB drop | 78 | 80 | +2 mm |
| BB height | 271 | not listed | |
| Standover | 809 | 843.9 | +35 mm |
| Seat tube length | 505 | 585 | +80 mm |
| Fork length | 375 | not listed | |
| Head tube length | 168 | 215 | +47 mm |
| Wheelbase | not listed | 1045.8 |
Differences are the Giant Contend AR minus the Specialized Roubaix SL8 Sport. Full charts: 2026 Specialized Roubaix SL8 Sport, 2027 Giant Contend AR.
Where each sits in its class
Specialized Roubaix SL8 SportGiant 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 SportSL8 Sport | Giant Contend AR1 |
|---|---|---|
| Frame | Specialized FACT 10R | Giant ALUXX-SL Grade |
| Fork | Specialized Future Shock 3.2 | Giant Advanced-Grade |
| Shifter | Shimano 105 R7120 | Shimano CUES U6030 |
| Derailleur | Shimano 105 Di2, Shimano 105 R7100 | Shimano CUES U6030, Shimano CUES U6000 |
| Cassette | Shimano 105 | Shimano CS-LG400 |
| Chain | Shimano SLX M7100 | KMC X11 |
| Crankset | Shimano 105 | Shimano CUES FC-U6030-1 |
| Bottom bracket | Shimano Threaded BSA | Shimano BB-RS501 |
| Wheelset | DT Swiss G540 | Giant P-AR |
| Tire | Specialized Mondo | Giant Gavia Fondo 2 |
| Brake | Shimano CUES | Shimano CUES U6030 F]160 R]160 |
| Handlebar | Specialized Hover | Giant Contact |
| Stem | Specialized Future Pro | Giant Contact Aerolight |
| Grips | Supacaz Super Sticky Kush | not listed |
| Seatpost | Specialized Pavé | D-Fuse |
| Saddle | Specialized Power Sport | Giant Approach |
| Rim | not listed | Giant P-AR |
| Bar tape | not listed | Giant Cork Tape |
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