2024 Specialized Roubaix SL8 Sport vs 2026 Giant Contend AR
The L is the Giant Contend AR size closest to your 58 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 58, the Giant Contend AR in L places the top of the head tube 8 mm higher and 3 mm further 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
- Longer frame 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 Sport, 58Giant Contend AR, LDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL8 Sport 58 | Giant Contend AR L | Difference |
|---|---|---|---|
| Reach | 397mm | 400 | +3 mm |
| Stack | 630mm | 638 | +8 mm |
| Head tube angle | 73° | 72.5 | −0.5° |
| Seat tube angle | 73.5° | 73.0 | −0.5° |
| Chainstay length | 423mm | 422 | −1 mm |
| Wheelbase | 1031mm | 1046 | +15 mm |
| BB drop | 78mm | 80 | +2 mm |
| BB height | 271mm | not listed | |
| Standover | 809mm | 856 | +47 mm |
| Seat tube length | 505mm | 585 | +80 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 168mm | not listed | |
| Effective top tube | not listed | 595 |
Differences are the Giant Contend AR minus the Specialized Roubaix SL8 Sport. Full charts: 2024 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 Sport | Giant Contend ARAR 1 |
|---|---|---|
| Frame | not listed | Giant Contend |
| Fork | not listed | Giant Advanced-Grade Composite, full-composite OverDrive steerer, 12x100mm thru-axle, disc |
| Shifter | not listed | Shimano 105 Di2 |
| Derailleur | not listed | Shimano 105 Di2 |
| Cassette | not listed | Shimano 105 |
| Chain | not listed | KMC X12L-1 |
| Crankset | not listed | Shimano 105 |
| Bottom bracket | not listed | Shimano BB-RS501 |
| Wheelset | not listed | Giant P-R2 Disc |
| Tire | not listed | Giant Gavia Fondo 2 |
| Brake | not listed | Shimano 105 Di2 |
| Rotor | not listed | Giant MPH |
| Handlebar | not listed | Giant D-Fuse SL |
| Stem | not listed | Giant Contact |
| Grips | not listed | Velo Cork tape with gel |
| Headset | not listed | Giant OverDrive |
| Seatpost | not listed | Giant D-Fuse |
| Saddle | not listed | Giant Approach |
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