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Road Bike

Pinarello F5 vs Tarmac SL8: Sizing & Fit

Compare the new Pinarello F5 105 Di2 and Tarmac SL8 by candidate frame size. The F5's fractional labels do not need a guessed cross-brand conversion.

Cyclist considering which bike to choose

Side-by-Side Overview

Pinarello F5 105 Di2

USD dealer quote required

Best for: Riders wanting closely spaced race-frame options

Strengths

  • •Nine sourced geometry sizes
  • •Explicit CC and CE measurements
  • •Documented separate stem/bar setup

Considerations

  • •No height bands in the checked chart
  • •Older F5 geometry is not verified by this source

Specialized Tarmac SL8

USD quote depends on build

Best for: Racers comparing the SL8's seven-size range

Strengths

  • •Verified seven-size geometry record
  • •Declared 2023-2026 model scope
  • •Size-specific rather than representative measurements

Considerations

  • •Cockpit dimensions vary by build
  • •Matching a number does not guarantee matching fit

Head-to-Head Comparison

Example stack
Pinarello F5 105 Di2542.4 mm at 53
Specialized Tarmac SL8544 mm at 54
Example reach
Pinarello F5 105 Di2385.6 mm at 53
Specialized Tarmac SL8384 mm at 54
Larger example stack
Pinarello F5 105 Di2557.7 mm at 54.5
Specialized Tarmac SL8565 mm at 56
Larger example reach
Pinarello F5 105 Di2388.3 mm at 54.5
Specialized Tarmac SL8395 mm at 56
Source scope
Pinarello F5 105 Di2New F5 105 Di2 only
Specialized Tarmac SL8Tarmac SL8 2023-2026 family

Size Chart Comparison

Pinarello F5 105 Di2
Size 43
Stack:
502 mm
Reach:
351.3 mm
Size 46.5
Stack:
517.3 mm
Reach:
365.4 mm
Size 50
Stack:
525.2 mm
Reach:
372.2 mm
Size 51.5
Stack:
532.1 mm
Reach:
378.2 mm
Size 53
Stack:
542.4 mm
Reach:
385.6 mm
Size 54.5
Stack:
557.7 mm
Reach:
388.3 mm
Size 56
Stack:
570.1 mm
Reach:
390.8 mm
Size 57.5
Stack:
599.2 mm
Reach:
395.5 mm
Size 59.5
Stack:
633.4 mm
Reach:
400.4 mm
Specialized Tarmac SL8
Size 44
Stack:
501 mm
Reach:
366 mm
Size 49
Stack:
514 mm
Reach:
375 mm
Size 52
Stack:
527 mm
Reach:
380 mm
Size 54
Stack:
544 mm
Reach:
384 mm
Size 56
Stack:
565 mm
Reach:
395 mm
Size 58
Stack:
591 mm
Reach:
402 mm
Size 61
Stack:
612 mm
Reach:
408 mm

Geometry Comparison Chart

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Comparing a different size or generation? Use the bike geometry comparison tool with the exact frame charts instead of assuming matching size labels mean matching fit.

Source-backed geometry used in this table

For now this pilot only covers stack and reach. We still do not have standover, top tube, wheelbase, or angle data in a verified record here, so the page stops short of making a stronger fit call.

Sizing Comparison

New F5 53 measures 542.4/385.6 mm stack/reach. Tarmac SL8 54 is 544/384 mm: 1.6 mm taller and 1.6 mm shorter at the frame.

Verdict

The example F5 53 and SL8 54 are very close in stack and reach. Compare the actual cockpit dimensions next. The higher number on the Specialized does not mean it must fit a taller rider, and the F5's fractional labels do not make it inherently more precise for every body.

Pinarello F5 105 Di2 vs Specialized Tarmac SL8 FAQ