2026 Specialized Roubaix SL8 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 in 54, the Giant Contend AR in S places the top of the head tube 11 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 6 mm longer, which can contribute to stability at speed.
- Frame stack
- −11 mm
- Lower front end
- Frame reach
- −1 mm
- About the same reach
- Wheelbase
- +6 mm
- Longer: steadier at speed
- Head angle
- n/a
- One of the bikes has no number for this
- Chainstays
- +2 mm
- About the same
The two frames
We can't draw these frames yet. The Specialized Roubaix SL8 numbers we have for size 54 are missing the head angle. The numbers below still compare.
Geometry side by side
| Measurement | Specialized Roubaix SL8 54 | Giant Contend AR S | Difference |
|---|---|---|---|
| Reach | 381 | 380 | −1 mm |
| Stack | 585 | 574 | −11 mm |
| Head tube angle | not listed | 72.0 | |
| Seat tube angle | 74 | 73.5 | −0.5° |
| Chainstay length | 420 | 422 | +2 mm |
| Wheelbase | 1005 | 1011 | +6 mm |
| BB height | 270mm | not listed | |
| Effective top tube | not listed | 550 | |
| BB drop | not listed | 80 | |
| Standover | not listed | 783 | |
| Seat tube length | not listed | 500 | |
| Head tube length | not listed | not listed |
Differences are the Giant Contend AR minus the Specialized Roubaix SL8. Full charts: 2026 Specialized Roubaix SL8, 2026 Giant Contend AR.
Where each sits in its class
Specialized Roubaix SL8Giant 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 SL8S-Works SL8 | Giant Contend ARAR 1 |
|---|---|---|
| Frame | Specialized Roubaix SL8 | Giant Contend |
| Fork | Specialized Future Shock 3.3 | Giant Advanced-Grade Composite, full-composite OverDrive steerer, 12x100mm thru-axle, disc |
| Shifter | SRAM E1 RED | Shimano 105 Di2 |
| Derailleur | SRAM E1 RED AXS | Shimano 105 Di2 |
| Cassette | SRAM XG-1290 Red | Shimano 105 |
| Chain | SRAM Flattop Red | KMC X12L-1 |
| Crankset | SRAM AXS RED Powermeter | Shimano 105 |
| Bottom bracket | SRAM DUB | Shimano BB-RS501 |
| Wheelset | Roval Rapide CLX | Giant P-R2 Disc |
| Tire | Mondo | Giant Gavia Fondo 2 |
| Brake | SRAM E1 RED AXS | Shimano 105 Di2 |
| Rotor | Shimano Ultegra | Giant MPH |
| Handlebar | Roval Alpinist | Giant D-Fuse SL |
| Stem | Roval Alpinist | Giant Contact |
| Grips | Specialized Supacaz Super Sticky Kush | Velo Cork tape with gel |
| Bar tape | Supacaz Super Sticky Kush | not listed |
| Seatpost | Specialized Pave | Giant D-Fuse |
| Saddle | Specialized Power | Giant Approach |
| Headset | not listed | Giant OverDrive |
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