2024 Trek Émonda SLR vs 2026 Specialized Tarmac SL8 Pro Shimano
The 58 is the Specialized Tarmac SL8 Pro Shimano size closest to your 60 Trek Émonda 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 Émonda SLR in 60, the Specialized Tarmac SL8 Pro Shimano in 58 places the top of the head tube 10 mm lower and 3 mm further forward, relative to the bottom bracket.
- Frame stack
- −10 mm
- Lower front end
- Frame reach
- +3 mm
- Longer frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −0.4°
- Slacker: calmer steering
- Chainstays
- −1 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Émonda SLR numbers we have for size 60 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Émonda SLR 60 | Specialized Tarmac SL8 Pro Shimano 58 | Difference |
|---|---|---|---|
| Reach | 399 | 402 | +3 mm |
| Stack | 601 | 591 | −10 mm |
| Head tube angle | 73.9° | 73.5 | −0.4° |
| Effective top tube | 586 | not listed | |
| Chainstay length | 411 | 410 | −1 mm |
| Wheelbase | 1001 | not listed | |
| BB drop | 68 | not listed | |
| Standover | 811 | not listed | |
| Seat tube length | 573 | not listed | |
| Head tube length | 191 | 184 | −7 mm |
| Seat tube angle | not listed | 73.5 |
Differences are the Specialized Tarmac SL8 Pro Shimano minus the Trek Émonda SLR. Full charts: 2024 Trek Émonda SLR, 2026 Specialized Tarmac SL8 Pro Shimano.
Where each sits in its class
Trek Émonda 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 Émonda SLRSLR 9 AXS | Specialized Tarmac SL8 Pro ShimanoPro - Shimano Ultegra Di2 |
|---|---|---|
| Frame | Trek Ultralight 800 | Specialized Tarmac SL8 |
| Fork | Trek Emonda SLR | Specialized FACT 10r |
| Shifter | SRAM RED eTap AXS | Shimano Ultegra R8170 |
| Derailleur | SRAM RED eTAP AXS | Shimano Ultegra R8150 Di2 |
| Cassette | SRAM RED XG-1290 | Shimano Ultegra |
| Chain | SRAM RED D1 | Shimano XT M8100 |
| Crankset | SRAM RED Power Meter | Shimano Ultegra R81000 |
| Bottom bracket | SRAM DUB | Shimano Threaded BSA |
| Wheelset | Bontrager Aeolus RSL 37 | Roval Rapide CL III |
| Tire | Bontrager R4 320 Handmade Clincher | Specialized S-Works Turbo |
| Brake | SRAM Red eTap AXS | Shimano Ultegra R8170 |
| Handlebar | Bontrager Aeolus RSL | Roval Rapide Cockpit |
| Seatpost | Bontrager Seatmast Cap | Specialized S-Works Tarmac SL8 |
| Saddle | Bontrager Aeolus | Specialized Power Pro |
| Rotor | not listed | Shimano Ultegra R8170 |
| Stem | not listed | Roval Rapide Cockpit |
| Bar tape | not listed | Supacaz Super Sticky Kush |
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