Trek Checkmate SLR
Gravel racers coming from a road-race fit who found Checkpoint too tall or too touring-oriented.
The gravel-race Trek: lower, longer, and more aero than Checkpoint. It wants speed on dirt, not a full frame-bag tour.
Gravel racers coming from a road-race fit who found Checkpoint too tall or too touring-oriented.
The gravel-race Trek: lower, longer, and more aero than Checkpoint. It wants speed on dirt, not a full frame-bag tour.
Fast road riders who want Orbea aero. Orca if you care more about weight.
Aero Orbea race bike. Deeper tubes than Orca, same size run so many riders can twin the two on stack/reach.
Racers and fast club riders who want the modern Tarmac. If you came off an SL7, check that the stack/reach still matches your size.
The current Specialized race bike: lighter than SL7, still aero, and famously 'it just disappears' if the fit is right. Size by stack/reach — the 54/56 split is where a lot of riders hop.
| Measurement |  TimeAlpe d'Huez 2024 |  |  OrbeaOrca Aero 2022 |  SpecializedTarmac SL8 2024 |
|---|---|---|---|---|
| Stackmm | 561 | 580+19 | 542−19 | 544−17 |
| Reachmm | 396 | 403+7 | 388−8 | 384−12 |
| Head tube angle° | 73.0 | 72.2−0.8 | 72.8−0.2 | 73.0 |
| Seat tube angle° | 73.0 | 73.2+0.2 | 73.5+0.5 | 74.0+1.0 |
| Chainstaymm | 408 | 425+17 | 408 | 410+2 |
| Wheelbasemm | 998 | 1038+40 | 980−18 | 978−20 |
| BB dropmm | 70 | 74+4 | 68−2 | 72+2 |
| BB heightmm | — | — | — | 268 |
| Standovermm | — | — | — | 768 |
| Part | Alpe d'Huez M | Checkmate SLR ML | Orca Aero 53 | Tarmac SL8 54 |
|---|---|---|---|---|
| Stem | 100 mm | 100 mm | 90 mm | 100 mm |
| Bar | 420 mm | 420 mm | 400 mm | 420 mm |
| Crank | 172.5 mm | 172.5 mm | 170 mm | 172.5 mm |
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