2024 Trek Emonda SLR vs 2026 Specialized Tarmac SL8 Pro Shimano
The 52 is the Specialized Tarmac SL8 Pro Shimano size closest to your 52 Trek Emonda SLR. 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 Trek Emonda SLR in 52, the Specialized Tarmac SL8 Pro Shimano in 52 places the top of the head tube 6 mm lower and 3 mm further back, relative to the bottom bracket.
- Frame stack
- −6 mm
- Lower front end
- Frame reach
- −3 mm
- Shorter frame reach
- Wheelbase
- −2 mm
- About the same
- Head angle
- −0.3°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Emonda SLR numbers we have for size 52 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Emonda SLR 52 | Specialized Tarmac SL8 Pro Shimano 52 | Difference |
|---|---|---|---|
| Reach | 383 | 380 | −3 mm |
| Stack | 533 | 527 | −6 mm |
| Head tube angle | 72.8° | 72.5 | −0.3° |
| Effective top tube | 534 | not listed | |
| Chainstay length | 410 | 410 | ±0 mm |
| Wheelbase | 977 | 975 | −2 mm |
| BB drop | 72 | not listed | |
| Standover | 732 | not listed | |
| Seat tube length | 483 | not listed | |
| Head tube length | 121 | 120 | −1 mm |
| Seat tube angle | not listed | 74 |
Differences are the Specialized Tarmac SL8 Pro Shimano minus the Trek Emonda SLR. Full charts: 2024 Trek Emonda SLR, 2026 Specialized Tarmac SL8 Pro Shimano.
Where each sits in its class
Trek Emonda SLRSpecialized 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 | Trek Emonda SLRSLR 6 AXS | Specialized Tarmac SL8 Pro ShimanoPro - Shimano Ultegra Di2 |
|---|---|---|
| Frame | Trek Emonda SLR | Specialized Tarmac SL8 |
| Shifter | SRAM ETAP Rival | Shimano Ultegra R8170 |
| Derailleur | SRAM eTap Rival AXS | Shimano Ultegra R8150 Di2 |
| Cassette | SRAM XG1250 Rival | Shimano Ultegra |
| Chain | SRAM Rival | Shimano XT M8100 |
| Crankset | SRAM AXS Rival | Shimano Ultegra R81000 |
| Wheelset | Bontrager Aeolus Pro 37 | Roval Rapide CL III |
| Tire | Bontrager R3 | Specialized S-Works Turbo |
| Brake | SRAM Paceline | Shimano Ultegra R8170 |
| Rotor | SRAM Paceline | Shimano Ultegra R8170 |
| Handlebar | Bontrager Aeolus RSL Integrated | Roval Rapide Cockpit |
| Seatpost | Bontrager Seat Mast Cap | Specialized S-Works Tarmac SL8 |
| Saddle | Bontrager Aeolus P2 | Specialized Power Pro |
| Fork | not listed | Specialized FACT 10r |
| Bottom bracket | not listed | Shimano Threaded BSA |
| Stem | not listed | Roval Rapide Cockpit |
| Bar tape | not listed | Supacaz Super Sticky Kush |
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