2009 Specialized Tarmac SL2 vs 2009 Specialized Roubaix SL2
The 54 is the Specialized Roubaix SL2 size closest to your 54 Specialized Tarmac SL2. 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 Specialized Roubaix SL2
Compared with the Specialized Tarmac SL2 in 54, the Specialized Roubaix SL2 in 54 places the top of the head tube 15 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 22 mm longer, which can contribute to stability at speed.
- Frame stack
- −15 mm
- Lower front end
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- +22 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- +10 mm
- Longer: more planted
The two frames
We can't draw these frames yet. The Specialized Tarmac SL2 has no geometry for this size yet. The numbers below still compare.
Geometry side by side
| Measurement | Specialized Tarmac SL2 54 | Specialized Roubaix SL2 54 | Difference |
|---|---|---|---|
| Reach | 548mm | 548mm | ±0 mm |
| Stack | 510mm | 495mm | −15 mm |
| Head tube angle | 73 | 72 | −1.0° |
| Seat tube angle | 73.5 | 73.5 | ±0.0° |
| Effective top tube | 548 | 548 | ±0 mm |
| Chainstay length | 405 | 415 | +10 mm |
| Wheelbase | 978 | 1000 | +22 mm |
| BB drop | 69 | 71.5 | +3 mm |
| Standover | 777 | 781 | +4 mm |
| Seat tube length | 510 | 500 | −10 mm |
| Head tube length | 145 | 165 | +20 mm |
Differences are the Specialized Roubaix SL2 minus the Specialized Tarmac SL2. Full charts: 2009 Specialized Tarmac SL2, 2009 Specialized Roubaix SL2.
Where each sits in its class
Specialized Tarmac SL2Specialized Roubaix SL2
Each bike is ranked against the other road bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
