2026 Specialized Aethos 2 Expert vs 2026 BMC Roadmachine 01 THREE
We can't match sizes for these two: one of them has no stack and reach for the sizes shown.
What changes on the BMC Roadmachine 01 THREE
- Frame stack
- n/a
- One of the bikes has no number for this
- Frame reach
- n/a
- One of the bikes has no number for this
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −0.3°
- About the same head angle
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
Only the Specialized Aethos 2 Expert is drawn. The BMC Roadmachine 01 THREE numbers we have for size 56 are missing the reach, stack, chainstay length and wheelbase.
Geometry side by side
| Measurement | Specialized Aethos 2 Expert 54 | BMC Roadmachine 01 THREE 56 | Difference |
|---|---|---|---|
| Reach | 384 | not listed | |
| Stack | 559 | not listed | |
| Head tube angle | 72.5 | 72.2 | −0.3° |
| Seat tube angle | 74 | 74.2 | +0.2° |
| Effective top tube | 544 | not listed | |
| Chainstay length | 410 | not listed | |
| Wheelbase | 992 | not listed | |
| BB drop | 75 | not listed | |
| Standover | 759 | not listed | |
| Seat tube length | 490 | not listed | |
| Head tube length | 150 | not listed |
Differences are the BMC Roadmachine 01 THREE minus the Specialized Aethos 2 Expert. Full charts: 2026 Specialized Aethos 2 Expert, 2026 BMC Roadmachine 01 THREE.
Where each sits in its class
Specialized Aethos 2 ExpertBMC Roadmachine 01 THREE
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 | Specialized Aethos 2 ExpertExpert | BMC Roadmachine 01 THREETHREE |
|---|---|---|
| Frame | Specialized FACT Aethos 2 10r | BMC Roadmachine 01 |
| Fork | Specialized FACT Aethos 2 10r Carbon | not listed |
| Shifter | Shimano Ultegra R8170 Di2 | Shimano 105 Di2 |
| Derailleur | Shimano Ultegra R8150 Di2 front | Shimano 105 Di2, SRAM Force AXS |
| Cassette | Shimano Ultegra | Shimano 105 |
| Chain | Shimano XT M8100 | SRAM Force D1 |
| Crankset | Shimano Ultegra R8100 | Shimano 105 |
| Chainring | Shimano Ultegra R8100, SRAM 35 | Shimano 50 105, Shimano 34 105 |
| Bottom bracket | SRAM DUB GX | SRAM DUB GX |
| Wheelset | Roval C38 | BMC CRD-321 SL |
| Tire | Specialized S-Works Turbo | Vittoria Rubino V |
| Brake | Shimano Ultegra R8170 Di2 | Shimano 105 R7170 Di2 |
| Rotor | Shimano Ultegra | SRAM CenterLine X |
| Handlebar | Roval Alpinist | BMC HB D4 03 |
| Stem | Specialized Pro SL | BMC RSM 01 |
| Grips | Supacaz Super Sticky Kush | not listed |
| Seatpost | Roval Alpinist | BMC Roadmachine Carbon D-shaped |
| Saddle | Specialized Body Geometry Power Expert | Selle Italia X Superflow |
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