2024 Trek Émonda SL Disc vs 2026 Specialized Tarmac SL8 Pro Shimano
The 49 is the Specialized Tarmac SL8 Pro Shimano size closest to your 47 Trek Émonda SL Disc. 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 Émonda SL Disc in 47, the Specialized Tarmac SL8 Pro Shimano in 49 places the top of the head tube 7 mm higher and about as far forward, relative to the bottom bracket.
- Frame stack
- +7 mm
- Higher front end
- Frame reach
- +2 mm
- About the same reach
- Wheelbase
- +1 mm
- About the same
- Head angle
- n/a
- One of the bikes has no number for this
- Chainstays
- ±0 mm
- About the same
The two frames
Only the Trek Émonda SL Disc is drawn. The Specialized Tarmac SL8 Pro Shimano numbers we have for size 49 are missing the head angle.
Geometry side by side
| Measurement | Trek Émonda SL Disc 47 | Specialized Tarmac SL8 Pro Shimano 49 | Difference |
|---|---|---|---|
| Reach | 373 | 375 | +2 mm |
| Stack | 507 | 514 | +7 mm |
| Head tube angle | 72.1 | not listed | |
| Seat tube angle | 74.6 | 75.5 | +0.9° |
| Effective top tube | 512 | not listed | |
| Chainstay length | 410 | 410 | ±0 mm |
| Wheelbase | 972 | 973 | +1 mm |
| BB drop | 72 | not listed | |
| Standover | 692 | not listed | |
| Seat tube length | 424 | not listed | |
| Head tube length | 100 | 109 | +9 mm |
Differences are the Specialized Tarmac SL8 Pro Shimano minus the Trek Émonda SL Disc. Full charts: 2024 Trek Émonda SL Disc, 2026 Specialized Tarmac SL8 Pro Shimano.
Where each sits in its class
Trek Émonda SL DiscSpecialized 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 Émonda SL DiscSL Disc | Specialized Tarmac SL8 Pro ShimanoPro - Shimano Ultegra Di2 |
|---|---|---|
| Frame | Trek Ultralight 500 | Specialized Tarmac SL8 |
| Fork | Trek Émonda SL | Specialized FACT 10r |
| Shifter | Shimano 105 | Shimano Ultegra R8170 |
| Derailleur | Trek derailleurs must have | Shimano Ultegra R8150 Di2 |
| Cassette | Shimano 105 | Shimano Ultegra |
| Chain | Shimano HG601 | Shimano XT M8100 |
| Crankset | Shimano 105 | Shimano Ultegra R81000 |
| Wheelset | Bontrager Paradigm SL | Roval Rapide CL III |
| Tire | Bontrager R1 Hard-Case Lite | Specialized S-Works Turbo |
| Brake | Shimano 105 | Shimano Ultegra R8170 |
| Rotor | Shimano CL800 | Shimano Ultegra R8170 |
| Handlebar | Bontrager Comp VR-C | Roval Rapide Cockpit |
| Stem | Bontrager Elite | Roval Rapide Cockpit |
| Seatpost | Bontrager Seatmast Cap | Specialized S-Works Tarmac SL8 |
| Saddle | Bontrager P3 Verse | Specialized Power Pro |
| Bottom bracket | not listed | Shimano Threaded BSA |
| Bar tape | not listed | Supacaz Super Sticky Kush |
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