Bianchi Specialissima 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: the frame positions differ enough to matter. Compare the geometry below, then use your measurements to identify the safer size and setup.

Compare them for meCompare geometry and sizes

In one look

Bianchi Specialissima: race geometry. Specialized Tarmac SL9: race geometry.

  • The Specialized Tarmac SL9 stack is slightly taller, about 8 mm, which is not enough to change the position by itself.
  • The Specialized Tarmac SL9 cockpit is slightly shorter, by about 7 mm.

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

2027 • race geometry
Bianchi Specialissima
Full size guide
2026 • race geometry
Specialized Tarmac SL9
Full size guide

Fit and size differences

Geometry can separate these bikes: matched sizes create a meaningfully different position.

Median difference across matched sizes: stack 8 mm, reach 7 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 Bianchi Specialissima and Specialized Tarmac SL9 sizes compare?

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

Bianchi Specialissima
47
Stack 486, Reach 379
Specialized Tarmac SL9
44
Stack 501, Reach 366

Stack: 15 mm taller

Reach: 13 mm shorter

Bianchi Specialissima
50
Stack 494, Reach 386
Specialized Tarmac SL9
44
Stack 501, Reach 366

Stack: 7 mm taller

Reach: 20 mm shorter

Bianchi Specialissima
53
Stack 520, Reach 387
Specialized Tarmac SL9
52
Stack 527, Reach 380

Stack: 7 mm taller

Reach: 7 mm shorter

Bianchi Specialissima
55
Stack 536, Reach 391
Specialized Tarmac SL9
54
Stack 544, Reach 384

Stack: 8 mm taller

Reach: 7 mm shorter

Bianchi Specialissima
57
Stack 552, Reach 397
Specialized Tarmac SL9
56
Stack 565, Reach 395

Stack: 13 mm taller

Reach: practically identical

Bianchi Specialissima
59
Stack 571, Reach 400
Specialized Tarmac SL9
56
Stack 565, Reach 395

Stack: 6 mm lower

Reach: 5 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 has the taller front end: Bianchi Specialissima or Specialized Tarmac SL9?
The Specialized Tarmac SL9 stack is slightly taller, about 8 mm, which is not enough to change the position by itself.

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