2025 Specialized Roubaix SL8 Sport vs 2026 Giant Contend AR
The Giant Contend AR size closest to your 54 is the M. Compare the M instead
What changes on the Giant Contend AR
Compared with the Specialized Roubaix SL8 Sport in 54, the Giant Contend AR in XL places the top of the head tube 53 mm higher and 19 mm further forward, relative to the bottom bracket. Its wheelbase is 41 mm longer, which can contribute to stability at speed.
- Frame stack
- +53 mm
- Higher front end
- Frame reach
- +19 mm
- Longer frame reach
- Wheelbase
- +41 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 Sport, 54Giant Contend AR, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL8 Sport 54 | Giant Contend AR XL | Difference |
|---|---|---|---|
| Reach | 381mm | 400 | +19 mm |
| Stack | 585mm | 638 | +53 mm |
| Head tube angle | 72.3° | 72.5 | +0.2° |
| Seat tube angle | 74° | 73.0 | −1.0° |
| Effective top tube | 550mm | 595 | +45 mm |
| Chainstay length | 420mm | 422 | +2 mm |
| Wheelbase | 1005mm | 1046 | +41 mm |
| BB drop | 78mm | 80 | +2 mm |
| BB height | 270mm | not listed | |
| Standover | 766mm | 856 | +90 mm |
| Seat tube length | 465mm | 585 | +120 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 122mm | 215 | +93 mm |
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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