2009 Specialized Roubaix SL2 vs 2009 Specialized Tarmac SL2
The 52 is the Specialized Tarmac SL2 size closest to your 54 Specialized Roubaix 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 Tarmac SL2
Compared with the Specialized Roubaix SL2 in 54, the Specialized Tarmac SL2 in 52 places the top of the head tube 5 mm lower and 11 mm further back, relative to the bottom bracket. Its wheelbase is 30 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −5 mm
- Lower front end
- Frame reach
- −11 mm
- Shorter frame reach
- Wheelbase
- −30 mm
- Shorter: quicker to change direction
- Head angle
- +1.0°
- Steeper: sharper steering
- Chainstays
- −10 mm
- Shorter: livelier
The two frames
We can't draw these frames yet. The Specialized Roubaix SL2 has no geometry for this size yet. The numbers below still compare.
Geometry side by side
| Measurement | Specialized Roubaix SL2 54 | Specialized Tarmac SL2 52 | Difference |
|---|---|---|---|
| Reach | 548mm | 537mm | −11 mm |
| Stack | 495mm | 490mm | −5 mm |
| Head tube angle | 72 | 73 | +1.0° |
| Seat tube angle | 73.5 | 74 | +0.5° |
| Effective top tube | 548 | 537 | −11 mm |
| Chainstay length | 415 | 405 | −10 mm |
| Wheelbase | 1000 | 970 | −30 mm |
| BB drop | 71.5 | 71.5 | ±0 mm |
| Standover | 781 | 755 | −26 mm |
| Seat tube length | 500 | 490 | −10 mm |
| Head tube length | 165 | 120 | −45 mm |
Differences are the Specialized Tarmac SL2 minus the Specialized Roubaix SL2. Full charts: 2009 Specialized Roubaix SL2, 2009 Specialized Tarmac SL2.
Where each sits in its class
Specialized Roubaix SL2Specialized Tarmac SL2
Each bike is ranked against the other road bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
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