Specialized Tarmac SL9 vs Spect Mira: which bike is right for you?

Compare ride character, intended rider, geometry, and fit. Add your measurements to see which bike suits you better and which size to choose on each.

Fit verdict: these frames put you in effectively the same position, so geometry will not decide this pair. What can: the sourced differences below and, once you enter your measurements, your size and setup on each frame.

Compare them for meCompare geometry and sizes

In one look

Specialized Tarmac SL9: race geometry. Spect Mira: race geometry.

  • Across matched sizes, the frame fronts of Specialized Tarmac SL9 and Spect Mira differ by only a few millimetres. Stem and spacer choices will have more effect on handlebar position.
  • The forward length of the frame is nearly the same across matched sizes.

The frame standards line up and we hold no sourced weight or performance claim that separates them. What is left to decide is your size and setup on each frame.

  • Price

    Specialized Tarmac SL9 is the dearer of the two, going by the cheapest build you can buy of each; Spect Mira starts lower.

Subjective findings from independent tests on stock or near-stock builds. Tyres, pressure and size change how a frame feels.

We compare differences at frame and model level. Components, current price, and availability depend on the exact build and seller.

2026 • race geometry
Specialized Tarmac SL9
Full size guide
2027 • race geometry
Spect Mira
Full size guide

Fit and size differences

Geometry does not separate these bikes: matched sizes put the rider in effectively the same position.

Typical difference across matched sizes: frame front height 2 mm, forward length 3 mm.

For a personal answer, the fit-and-size path uses your measurements to show only the relevant frame sizes. The full chart remains available as a reference.

View geometry for every size

How do Specialized Tarmac SL9 and Spect Mira sizes compare?

See the closest size matches and the differences in stack, reach, and riding position.

Specialized Tarmac SL9
44
Stack 501, Reach 366
Spect Mira
48
Stack 508, Reach 362

Stack: 7 mm taller

Reach: 4 mm shorter

Specialized Tarmac SL9
49
Stack 514, Reach 375
Spect Mira
51
Stack 519, Reach 376

Stack: 5 mm taller

Reach: practically identical

Specialized Tarmac SL9
52
Stack 527, Reach 380
Spect Mira
51
Stack 519, Reach 376

Stack: 8 mm lower

Reach: 4 mm shorter

Specialized Tarmac SL9
54
Stack 544, Reach 384
Spect Mira
54
Stack 542, Reach 384

Stack: practically identical

Reach: practically identical

Specialized Tarmac SL9
56
Stack 565, Reach 395
Spect Mira
56
Stack 565, Reach 392

Stack: practically identical

Reach: 3 mm shorter

Specialized Tarmac SL9
58
Stack 591, Reach 402
Spect Mira
58
Stack 588, Reach 401

Stack: 3 mm lower

Reach: practically identical

Specialized Tarmac SL9
61
Stack 612, Reach 408
Spect Mira
58
Stack 588, Reach 401

Stack: 24 mm lower

Reach: 7 mm shorter

The same size label can create a different position on each frame. Stack and reach are one part of the decision; the personalized comparison connects them to your body and each bike’s ride character.

FAQ

Can the same rider take different sizes on these two bikes?
Yes. Frame labels are not standardized, so the same rider may need different sizes. This comparison deliberately avoids a generic matched-size answer and hands your measurements to Bike Fit instead.
Which frame has the higher front: Specialized Tarmac SL9 or Spect Mira?
Across matched sizes, the frame fronts of Specialized Tarmac SL9 and Spect Mira differ by only a few millimetres. Stem and spacer choices will have more effect on handlebar position.

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