2026 Cervélo R5 vs 2026 Specialized Tarmac SL8 Pro Shimano
The 54 is the Specialized Tarmac SL8 Pro Shimano size closest to your 54 Cervélo R5. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Specialized Tarmac SL8 Pro Shimano
Compared with the Cervélo R5 in 54, the Specialized Tarmac SL8 Pro Shimano in 54 places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket.
- Frame stack
- −1 mm
- About the same height
- Frame reach
- +1 mm
- About the same reach
- Wheelbase
- ±0 mm
- About the same
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Cervélo R5, 54Specialized Tarmac SL8 Pro Shimano, 54Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Cervélo R5 54 | Specialized Tarmac SL8 Pro Shimano 54 | Difference |
|---|---|---|---|
| Reach | 383.3 | 384 | +1 mm |
| Stack | 544.6 | 544 | −1 mm |
| Head tube angle | 73 | 73 | ±0.0° |
| Seat tube angle | 73.5 | 74 | +0.5° |
| Effective top tube | 544 | not listed | |
| Chainstay length | 410 | 410 | ±0 mm |
| Wheelbase | 978 | 978 | ±0 mm |
| BB drop | 74 | not listed | |
| Head tube length | 132 | 137 | +5 mm |
Differences are the Specialized Tarmac SL8 Pro Shimano minus the Cervélo R5. Full charts: 2026 Cervélo R5, 2026 Specialized Tarmac SL8 Pro Shimano.
Where each sits in its class
Cervélo R5Specialized Tarmac SL8 Pro Shimano
Each bike is ranked against the other road bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Cervélo R5Dura-Ace Di2 | Specialized Tarmac SL8 Pro ShimanoPro - Shimano Ultegra Di2 |
|---|---|---|
| Frame | Cervélo R5 | Specialized Tarmac SL8 |
| Shifter | Shimano Dura-Ace Di2 | Shimano Ultegra R8170 |
| Derailleur | Shimano Dura-Ace Di2 | Shimano Ultegra R8150 Di2 |
| Cassette | Shimano Dura-Ace 11-34T | Shimano Ultegra |
| Crankset | Shimano Dura-Ace Di2 | Shimano Ultegra R81000 |
| Wheelset | Reserve 34|37TA ST | Roval Rapide CL III |
| Tire | Vittoria Corsa Speed | Specialized S-Works Turbo |
| Brake | Shimano Dura-Ace Di2 | Shimano Ultegra R8170 |
| Handlebar | Cervélo HB18 | Roval Rapide Cockpit |
| Stem | Cervélo HB18 | Roval Rapide Cockpit |
| Seatpost | Cervélo SP33 D-Shaped | Specialized S-Works Tarmac SL8 |
| Fork | not listed | Specialized FACT 10r |
| Chain | not listed | Shimano XT M8100 |
| Bottom bracket | not listed | Shimano Threaded BSA |
| Rotor | not listed | Shimano Ultegra R8170 |
| Bar tape | not listed | Supacaz Super Sticky Kush |
| Saddle | not listed | Specialized Power Pro |
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