2025 Specialized Roubaix SL8 Sport vs 2026 Giant Contend AR
The L is the Giant Contend AR size closest to your 61 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 61, the Giant Contend AR in L places the top of the head tube 27 mm lower and 3 mm further back, relative to the bottom bracket. Its wheelbase is 4 mm longer, which can contribute to stability at speed.
- Frame stack
- −27 mm
- Lower front end
- Frame reach
- −3 mm
- Shorter frame reach
- Wheelbase
- +4 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- −1 mm
- About the same
The two frames
Specialized Roubaix SL8 Sport, 61Giant Contend AR, LDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL8 Sport 61 | Giant Contend AR L | Difference |
|---|---|---|---|
| Reach | 403mm | 400 | −3 mm |
| Stack | 665mm | 638 | −27 mm |
| Head tube angle | 73.5° | 72.5 | −1.0° |
| Seat tube angle | 73.5° | 73.0 | −0.5° |
| Effective top tube | 600mm | 595 | −5 mm |
| Chainstay length | 423mm | 422 | −1 mm |
| Wheelbase | 1042mm | 1046 | +4 mm |
| BB drop | 78mm | 80 | +2 mm |
| BB height | 271mm | not listed | |
| Standover | 847mm | 856 | +9 mm |
| Seat tube length | 545mm | 585 | +40 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 202mm | not listed |
Differences are the Giant Contend AR minus the Specialized Roubaix SL8 Sport. Full charts: 2025 Specialized Roubaix SL8 Sport, 2026 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 ARAR 1 |
|---|---|---|
| Fork | Specialized Future Shock 3.1 | Giant Advanced-Grade Composite, full-composite OverDrive steerer, 12x100mm thru-axle, disc |
| Shifter | Shimano 105 R7120 | Shimano 105 Di2 |
| Derailleur | Shimano 105, Shimano 105 R7100 mechanical | Shimano 105 Di2 |
| Cassette | Shimano 105 | Shimano 105 |
| Chain | Shimano 105 | KMC X12L-1 |
| Crankset | Shimano 105 | Shimano 105 |
| Wheelset | DT Swiss G540 | Giant P-R2 Disc |
| Tire | Specialized S-Works Mondo 2BR | Giant Gavia Fondo 2 |
| Brake | Shimano 105 | Shimano 105 Di2 |
| Handlebar | Specialized Hover | Giant D-Fuse SL |
| Stem | Specialized Future | Giant Contact |
| Seatpost | Specialized S-Works Pave Seat post | Giant D-Fuse |
| Saddle | Specialized Power Sport | Giant Approach |
| Frame | not listed | Giant Contend |
| Bottom bracket | not listed | Shimano BB-RS501 |
| Rotor | not listed | Giant MPH |
| Grips | not listed | Velo Cork tape with gel |
| Headset | not listed | Giant OverDrive |
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