2025 Specialized Roubaix SL8 LTD vs 2027 Giant Contend AR
The XL is the Giant Contend AR size closest to your 58 Specialized Roubaix SL8 LTD. 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 LTD 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. Its wheelbase is 15 mm longer, which can contribute to stability at speed.
- Frame stack
- +8 mm
- Higher front end
- Frame reach
- +3 mm
- About the same reach
- Wheelbase
- +15 mm
- Longer: steadier at speed
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- −1 mm
- About the same
The two frames
Specialized Roubaix SL8 LTD, 58Giant Contend AR, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL8 LTD 58 | Giant Contend AR XL | Difference |
|---|---|---|---|
| Reach | 397mm | 399.9 | +3 mm |
| Stack | 630mm | 638.2 | +8 mm |
| Head tube angle | 73° | 72.5° | −0.5° |
| Seat tube angle | 73.5° | 73.0° | −0.5° |
| Effective top tube | 584mm | not listed | |
| Chainstay length | 423mm | 422 | −1 mm |
| Wheelbase | 1031mm | 1045.8 | +15 mm |
| BB drop | 78mm | 80 | +2 mm |
| BB height | 271mm | not listed | |
| Standover | 809mm | 843.9 | +35 mm |
| Seat tube length | 505mm | 585 | +80 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 168mm | 215 | +47 mm |
Differences are the Giant Contend AR minus the Specialized Roubaix SL8 LTD. Full charts: 2025 Specialized Roubaix SL8 LTD, 2027 Giant Contend AR.
Where each sits in its class
Specialized Roubaix SL8 LTDGiant 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 LTDS-Works SL8 LTD | Giant Contend AR1 |
|---|---|---|
| Fork | Specialized Future Shock 3.3 | Giant Advanced-Grade |
| Shifter | SRAM Red AXS | Shimano CUES U6030 |
| Derailleur | SRAM Red AXS | Shimano CUES U6030, Shimano CUES U6000 |
| Cassette | SRAM RED XG-1290 | Shimano CS-LG400 |
| Chain | SRAM RED | KMC X11 |
| Crankset | SRAM RED AXS Power Meter | Shimano CUES FC-U6030-1 |
| Bottom bracket | SRAM DUB | Shimano BB-RS501 |
| Wheelset | Roval Terra CLX II | Giant P-AR |
| Tire | Specialized S-Works Mondo 2BR | Giant Gavia Fondo 2 |
| Brake | SRAM RED | Shimano CUES U6030 F]160 R]160 |
| Stem | Specialized S-Works Future | Giant Contact Aerolight |
| Seatpost | Specialized S-Works Pave Seat post | D-Fuse |
| Saddle | Specialized S-Works Power | Giant Approach |
| Frame | not listed | Giant ALUXX-SL Grade |
| Rim | not listed | Giant P-AR |
| Handlebar | not listed | Giant Contact |
| Bar tape | not listed | Giant Cork Tape |
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