Cervélo Soloist vs Specialized Tarmac SL9: 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

Cervélo Soloist: race geometry. Specialized Tarmac SL9: race geometry.

  • Across matched sizes, the frame fronts of Cervélo Soloist and Specialized Tarmac SL9 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; Cervélo Soloist 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
Cervélo Soloist
Full size guide
2026 • race geometry
Specialized Tarmac SL9
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 1 mm, forward length 1 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 Cervélo Soloist and Specialized Tarmac SL9 sizes compare?

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

Cervélo Soloist
48
Stack 491, Reach 363
Specialized Tarmac SL9
44
Stack 501, Reach 366

Stack: 10 mm taller

Reach: 3 mm longer

Cervélo Soloist
51
Stack 515, Reach 374
Specialized Tarmac SL9
49
Stack 514, Reach 375

Stack: practically identical

Reach: practically identical

Cervélo Soloist
54
Stack 540, Reach 383
Specialized Tarmac SL9
54
Stack 544, Reach 384

Stack: 4 mm taller

Reach: practically identical

Cervélo Soloist
56
Stack 565, Reach 392
Specialized Tarmac SL9
56
Stack 565, Reach 395

Stack: practically identical

Reach: 3 mm longer

Cervélo Soloist
58
Stack 590, Reach 401
Specialized Tarmac SL9
58
Stack 591, Reach 402

Stack: practically identical

Reach: practically identical

Cervélo Soloist
61
Stack 615, Reach 410
Specialized Tarmac SL9
61
Stack 612, Reach 408

Stack: 3 mm lower

Reach: practically identical

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: Cervélo Soloist or Specialized Tarmac SL9?
Across matched sizes, the frame fronts of Cervélo Soloist and Specialized Tarmac SL9 differ by only a few millimetres. Stem and spacer choices will have more effect on handlebar position.

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