2026 Cervélo R5 XPLR vs 2026 Specialized Tarmac SL8 Pro Shimano
The 49 is the Specialized Tarmac SL8 Pro Shimano size closest to your 51 Cervélo R5 XPLR. 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 XPLR in 51, the Specialized Tarmac SL8 Pro Shimano in 49 places the top of the head tube 6 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 5 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −6 mm
- Lower front end
- Frame reach
- −2 mm
- About the same reach
- Wheelbase
- −5 mm
- Shorter: quicker to change direction
- Head angle
- n/a
- One of the bikes has no number for this
- Chainstays
- ±0 mm
- About the same
The two frames
Only the Cervélo R5 XPLR is drawn. The Specialized Tarmac SL8 Pro Shimano numbers we have for size 49 are missing the head angle.
Geometry side by side
| Measurement | Cervélo R5 XPLR 51 | Specialized Tarmac SL8 Pro Shimano 49 | Difference |
|---|---|---|---|
| Reach | 376.5 | 375 | −2 mm |
| Stack | 520.2 | 514 | −6 mm |
| Head tube angle | 72 | not listed | |
| Seat tube angle | 74 | 75.5 | +1.5° |
| Effective top tube | 526 | not listed | |
| Chainstay length | 410 | 410 | ±0 mm |
| Wheelbase | 977.6 | 973 | −5 mm |
| BB drop | 76.5 | not listed | |
| Head tube length | 109.3 | 109 | −0 mm |
Differences are the Specialized Tarmac SL8 Pro Shimano minus the Cervélo R5 XPLR. Full charts: 2026 Cervélo R5 XPLR, 2026 Specialized Tarmac SL8 Pro Shimano.
Where each sits in its class
Cervélo R5 XPLRSpecialized 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 R5 XPLRRed XPLR AXS 1 | Specialized Tarmac SL8 Pro ShimanoPro - Shimano Ultegra Di2 |
|---|---|---|
| Frame | Cervélo R5 | Specialized Tarmac SL8 |
| Shifter | SRAM RED | Shimano Ultegra R8170 |
| Derailleur | SRAM XPLR AXS | Shimano Ultegra R8150 Di2 |
| Cassette | SRAM RED | Shimano Ultegra |
| Crankset | SRAM RED AXS | Shimano Ultegra R81000 |
| Wheelset | Reserve 34|37TA ST | Roval Rapide CL III |
| Tire | Vittoria Corsa Speed | Specialized S-Works Turbo |
| Brake | SRAM Red AXS | Shimano Ultegra R8170 |
| Rotor | SRAM Red | 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 |
| Saddle | Prologo Nago R4 | Specialized Power Pro |
| Fork | not listed | Specialized FACT 10r |
| Chain | not listed | Shimano XT M8100 |
| Bottom bracket | not listed | Shimano Threaded BSA |
| Bar tape | not listed | Supacaz Super Sticky Kush |
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