2009 Specialized Roubaix SL2 vs 2009 Specialized Tarmac SL2
The Specialized Tarmac SL2 size closest to your 54 is the 52. Compare the 52 instead
What changes on the Specialized Tarmac SL2
Compared with the Specialized Roubaix SL2 in 54, the Specialized Tarmac SL2 in 58 places the top of the head tube 55 mm higher and 34 mm further forward, relative to the bottom bracket. Its wheelbase is 3 mm longer, which can contribute to stability at speed.
- Frame stack
- +55 mm
- Higher front end
- Frame reach
- +34 mm
- Longer frame reach
- Wheelbase
- +3 mm
- Longer: steadier at speed
- Head angle
- +1.5°
- Steeper: sharper steering
- Chainstays
- −8 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 58 | Difference |
|---|---|---|---|
| Reach | 548mm | 582mm | +34 mm |
| Stack | 495mm | 550mm | +55 mm |
| Head tube angle | 72 | 73.5 | +1.5° |
| Seat tube angle | 73.5 | 73 | −0.5° |
| Effective top tube | 548 | 582 | +34 mm |
| Chainstay length | 415 | 407 | −8 mm |
| Wheelbase | 1000 | 1003 | +3 mm |
| BB drop | 71.5 | 67.5 | −4 mm |
| Standover | 781 | 828 | +47 mm |
| Seat tube length | 500 | 550 | +50 mm |
| Head tube length | 165 | 205 | +40 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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