2025 Specialized Roubaix SL8 Expert vs 2026 Giant Contend AR
The M is the Giant Contend AR size closest to your 54 Specialized Roubaix SL8 Expert. 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 Expert in 54, the Giant Contend AR in M 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 Expert, 54Giant Contend AR, MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL8 Expert 54 | Giant Contend AR M | Difference |
|---|---|---|---|
| Reach | 381 | 383 | +2 mm |
| Stack | 585 | 595 | +10 mm |
| Head tube angle | 72.3 | 72.5 | +0.2° |
| Seat tube angle | 74 | 73.0 | −1.0° |
| Effective top tube | 550 | 565 | +15 mm |
| Chainstay length | 420 | 422 | +2 mm |
| Wheelbase | 1005 | 1015 | +10 mm |
| BB drop | 78 | 80 | +2 mm |
| BB height | 270 | not listed | |
| Standover | 766 | 810 | +44 mm |
| Seat tube length | 465 | 535 | +70 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 122 | not listed |
Differences are the Giant Contend AR minus the Specialized Roubaix SL8 Expert. Full charts: 2025 Specialized Roubaix SL8 Expert, 2026 Giant Contend AR.
Where each sits in its class
Specialized Roubaix SL8 ExpertGiant 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 ExpertSL8 Expert | 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 | SRAM Rival ETAP AXS | Shimano 105 Di2 |
| Derailleur | SRAM Rival ETAP AXS | Shimano 105 Di2 |
| Cassette | SRAM XG1250 | Shimano 105 |
| Chain | SRAM Rival | KMC X12L-1 |
| Crankset | SRAM Rival AXS | Shimano 105 |
| Bottom bracket | SRAM DUB | Shimano BB-RS501 |
| Wheelset | Roval Terra C | Giant P-R2 Disc |
| Tire | Specialized S-Works Mondo 2BR | Giant Gavia Fondo 2 |
| Brake | SRAM Rival | Shimano 105 Di2 |
| Handlebar | Specialized Hover Expert | Giant D-Fuse SL |
| Stem | Specialized Future | Giant Contact |
| Seatpost | Specialized S-Works Pave Seat post | Giant D-Fuse |
| Saddle | Specialized Power Expert | Giant Approach |
| Rotor | not listed | Giant MPH |
| Grips | not listed | Velo Cork tape with gel |
| Headset | not listed | Giant OverDrive |
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