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: Orbea Orca or Specialized Tarmac SL9?

The frame front of Orbea Orca is slightly higher, by about 5 mm. That difference alone does not settle your position.

Orbea Orca 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 are close, a few millimetres apart. The frame alone will not decide this; use your measurements to see which size and setup gets nearer to your position on each bike.

Compare them for me Compare geometry and sizes

In one look

Orbea Orca: race geometry. Specialized Tarmac SL9: race geometry.

The frame front of Orbea Orca is slightly higher, by about 5 mm. That difference alone does not settle your position.
The forward length of the frame is nearly the same across matched sizes.

These two split on bottom bracket; the sourced values are below. What each difference means for your size, your setup and the riding you describe is in the full comparison.

Bottom bracketDiffersSource 1 Source 2
Orbea Orca
Press fit
Specialized Tarmac SL9
Threaded
A threaded bottom bracket is simpler to service and less prone to creaking; press fit saves weight and allows a wider shell.
Price
Specialized Tarmac SL9 is the dearer of the two, going by the cheapest build you can buy of each; Orbea Orca 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: Orbea Orca; Size guide and geometry for the Orbea Orca
2026 • race geometry: Specialized Tarmac SL9; Size guide and geometry for the Specialized Tarmac SL9

What do you need from this comparison?

Start with the decision you are making. We will ask only for the details needed to answer it.

Step 1/1

What are you trying to understand?

Your answer decides which questions follow and what the result focuses on.

Fit and size differences

The matched frame measurements differ by only a few millimetres, so stem and spacer choices can matter more than the frame.

Typical difference across matched sizes: frame front height 5 mm, forward length 0 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 Orbea Orca and Specialized Tarmac SL9 sizes compare?

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

Orbea Orca: 47; Stack 506, Reach 370
Specialized Tarmac SL9: 44; Stack 501, Reach 366

Stack: 5 mm lower

Reach: 4 mm shorter

Orbea Orca: 49; Stack 515, Reach 375
Specialized Tarmac SL9: 49; Stack 514, Reach 375

Stack: practically identical

Reach: practically identical

Orbea Orca: 51; Stack 533, Reach 380
Specialized Tarmac SL9: 52; Stack 527, Reach 380

Stack: 6 mm lower

Reach: practically identical

Orbea Orca: 53; Stack 552, Reach 385
Specialized Tarmac SL9: 54; Stack 544, Reach 384

Stack: 8 mm lower

Reach: practically identical

Orbea Orca: 55; Stack 572, Reach 391
Specialized Tarmac SL9: 56; Stack 565, Reach 395

Stack: 7 mm lower

Reach: 4 mm longer

Orbea Orca: 57; Stack 590, Reach 398
Specialized Tarmac SL9: 58; Stack 591, Reach 402

Stack: practically identical

Reach: 4 mm longer

Orbea Orca: 60; Stack 616, Reach 404
Specialized Tarmac SL9: 61; Stack 612, Reach 408

Stack: 4 mm lower

Reach: 4 mm longer

Orbea Orca	Specialized Tarmac SL9	The position will feel
47Stack 506 · Reach 370	44Stack 501 · Reach 366	Stack: 5 mm lower · Reach: 4 mm shorter
49Stack 515 · Reach 375	49Stack 514 · Reach 375	Stack: practically identical · Reach: practically identical
51Stack 533 · Reach 380	52Stack 527 · Reach 380	Stack: 6 mm lower · Reach: practically identical
53Stack 552 · Reach 385	54Stack 544 · Reach 384	Stack: 8 mm lower · Reach: practically identical
55Stack 572 · Reach 391	56Stack 565 · Reach 395	Stack: 7 mm lower · Reach: 4 mm longer
57Stack 590 · Reach 398	58Stack 591 · Reach 402	Stack: practically identical · Reach: 4 mm longer
60Stack 616 · Reach 404	61Stack 612 · Reach 408	Stack: 4 mm lower · Reach: 4 mm longer

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: Orbea Orca or Specialized Tarmac SL9?: The frame front of Orbea Orca is slightly higher, by about 5 mm. That difference alone does not settle your position.

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