2024 Specialized Roubaix SL8 Expert vs 2025 Giant Contend AR
The L is the Giant Contend AR size closest to your 56 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 56, the Giant Contend AR in L places the top of the head tube 9 mm higher and 3 mm further forward, relative to the bottom bracket. Its wheelbase is 19 mm longer, which can contribute to stability at speed.
- Frame stack
- +9 mm
- Higher front end
- Frame reach
- +3 mm
- Longer frame reach
- Wheelbase
- +19 mm
- Longer: steadier at speed
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- +2 mm
- About the same
The two frames
Specialized Roubaix SL8 Expert, 56Giant Contend AR, LDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL8 Expert 56 | Giant Contend AR L | Difference |
|---|---|---|---|
| Reach | 389mm | 392 | +3 mm |
| Stack | 605mm | 614 | +9 mm |
| Head tube angle | 73° | 72.5° | −0.5° |
| Seat tube angle | 73.5° | 73.0° | −0.5° |
| Chainstay length | 420mm | 422 | +2 mm |
| Wheelbase | 1012mm | 1031 | +19 mm |
| BB drop | 78mm | 80 | +2 mm |
| BB height | 270mm | not listed | |
| Standover | 787mm | 829 | +42 mm |
| Seat tube length | 485mm | 535 | +50 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 140mm | 190 | +50 mm |
Differences are the Giant Contend AR minus the Specialized Roubaix SL8 Expert. Full charts: 2024 Specialized Roubaix SL8 Expert, 2025 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 AR4 |
|---|---|---|
| Frame | Specialized Roubaix | Giant ALUXX-grade |
| Fork | Specialized Future Shock 3.2 | Giant Advanced-Grade |
| Shifter | SRAM Rival eTAP AXS | Shimano Claris |
| Derailleur | SRAM Rival eTAP AXS | Shimano Claris |
| Cassette | SRAM XG1250 | Shimano CS-HG50 Deore |
| Chain | SRAM Rival | KMC Z72 |
| Crankset | SRAM Rival AXS | FSA Tempo |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | Roval Terra C | not listed |
| Tire | Specialized S-Works Mondo 2BR | Giant S-R3 AC |
| Brake | SRAM Rival | Tektro MD-C550, Shimano Claris |
| Handlebar | Specialized Hover Expert | Giant Connect XS:40cm |
| Stem | Specialized Future | Giant Sport XS:80mm |
| Seatpost | Specialized S-Works Pave Seat post | Giant D-Fuse |
| Saddle | Specialized Power Expert | Giant Approach |
| Rim | not listed | Giant S-R2 |
| Grips | not listed | Velo cork tape |
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