2027 Specialized Aethos 2 SRAM vs 2026 BMC Roadmachine TWO
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 TWO
- 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
- −1.3°
- Slacker: calmer steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
Only the Specialized Aethos 2 SRAM is drawn. The BMC Roadmachine TWO numbers we have for size 54 are missing the reach, stack, seat angle, chainstay length and wheelbase.
Geometry side by side
| Measurement | Specialized Aethos 2 SRAM 61 | BMC Roadmachine TWO 54 | Difference |
|---|---|---|---|
| Reach | 404mm | not listed | |
| Stack | 627mm | not listed | |
| Head tube angle | 73.5° | 72.2 | −1.3° |
| Seat tube angle | 74° | not listed | |
| Effective top tube | 584mm | not listed | |
| Chainstay length | 410mm | not listed | |
| Wheelbase | 1020mm | not listed | |
| BB drop | 73.5mm | not listed | |
| BB height | 268.5mm | not listed | |
| Standover | 834mm | 770 | −64 mm |
| Seat tube length | 570mm | not listed | |
| Fork length | 372mm | not listed | |
| Head tube length | 218mm | not listed |
Differences are the BMC Roadmachine TWO minus the Specialized Aethos 2 SRAM. Full charts: 2027 Specialized Aethos 2 SRAM, 2026 BMC Roadmachine TWO.
Where each sits in its class
Specialized Aethos 2 SRAMBMC Roadmachine TWO
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 SRAMS-Works - SRAM RED AXS | BMC Roadmachine TWOTWO |
|---|---|---|
| Frame | Specialized S-Works Aethos 2 FACT | BMC Roadmachine |
| Shifter | SRAM RED AXS E1 | Shimano 105 R7170 |
| Derailleur | SRAM RED AXS E1 | Shimano 105 R7150 Di2, Shimano 105 R7150 |
| Cassette | SRAM RED XG-1290 E1 | Shimano CS-HG710 |
| Chain | SRAM Red E1 flat-top | Shimano Deore M6100 |
| Crankset | SRAM RED AXS E1 | Shimano 105 R7100 |
| Bottom bracket | Specialized Alpha | Shimano BB-RS500-PB |
| Wheelset | Roval Rapide CLX | PRD23 |
| Tire | Specialized Cotton TLR | Vittoria Rubino V |
| Brake | SRAM Red E1 | Shimano 105 R7170 Di2 |
| Handlebar | Roval Alpinist Cockpit II | BMC HB D4 03 |
| Seatpost | Roval Alpinist | BMC Roadmachine Carbon D-shaped |
| Saddle | Specialized S-Works Power | Selle Italia Model X Superflow |
| Chainring | not listed | Shimano 50T, Shimano 34T |
| Rotor | not listed | Shimano SM-RT70, Shimano 160mm |
| Stem | not listed | BMC RSM 01 |
| Bag | not listed | Storage Pouch |
| Light | not listed | BMC Integrated Rear Light 25 |
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