2026 Specialized Roubaix SL8 Comp vs 2026 Giant Contend AR
The L is the Giant Contend AR size closest to your 64 Specialized Roubaix SL8 Comp. 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 Comp in 64, the Giant Contend AR in L places the top of the head tube 47 mm lower and 9 mm further back, relative to the bottom bracket. Its wheelbase is 8 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −47 mm
- Lower front end
- Frame reach
- −9 mm
- Shorter frame reach
- Wheelbase
- −8 mm
- Shorter: quicker to change direction
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- −1 mm
- About the same
The two frames
Specialized Roubaix SL8 Comp, 64Giant Contend AR, LDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL8 Comp 64 | Giant Contend AR L | Difference |
|---|---|---|---|
| Reach | 409 | 400 | −9 mm |
| Stack | 685 | 638 | −47 mm |
| Head tube angle | 73.5 | 72.5 | −1.0° |
| Seat tube angle | 73 | 73.0 | ±0.0° |
| Effective top tube | 618 | 595 | −23 mm |
| Chainstay length | 423 | 422 | −1 mm |
| Wheelbase | 1054 | 1046 | −8 mm |
| BB drop | 78 | 80 | +2 mm |
| BB height | 271 | not listed | |
| Standover | 865 | 856 | −9 mm |
| Seat tube length | 581 | 585 | +4 mm |
| Fork length | 375 | not listed | |
| Head tube length | 222 | not listed |
Differences are the Giant Contend AR minus the Specialized Roubaix SL8 Comp. Full charts: 2026 Specialized Roubaix SL8 Comp, 2026 Giant Contend AR.
Where each sits in its class
Specialized Roubaix SL8 CompGiant 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 CompSL8 Comp | Giant Contend ARAR 1 |
|---|---|---|
| Frame | Specialized FACT 10r | Giant Contend |
| Fork | Specialized Future Shock 3.2 | Giant Advanced-Grade Composite, full-composite OverDrive steerer, 12x100mm thru-axle, disc |
| Shifter | Shimano 105 R7170 Di2 | Shimano 105 Di2 |
| Derailleur | Shimano 105 R7150 Di2, Shimano 105 Di2 | Shimano 105 Di2 |
| Cassette | Shimano 105 R7100 | Shimano 105 |
| Chain | Shimano SLX M7100 | KMC X12L-1 |
| Crankset | Shimano 105 | Shimano 105 |
| Chainring | Shimano 105 | not listed |
| Bottom bracket | Shimano Threaded BSA | Shimano BB-RS501 |
| Wheelset | DT Swiss G540 | Giant P-R2 Disc |
| Tire | Specialized Mondo, Mondo Endurance | Giant Gavia Fondo 2 |
| Rim | DT Swiss G 540 | not listed |
| Brake | Shimano 105 | Shimano 105 Di2 |
| Handlebar | Specialized Hover | Giant D-Fuse SL |
| Stem | Specialized Future | Giant Contact |
| Grips | Supacaz Super Sticky Kush | Velo Cork tape with gel |
| Bar tape | Supacaz Super Sticky Kush | not listed |
| Seatpost | Specialized S-Works Pave | Giant D-Fuse |
| Saddle | Specialized Power Sport | Giant Approach |
| Rotor | not listed | Giant MPH |
| Headset | not listed | Giant OverDrive |
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