2023 Trek Madone vs 2025 Specialized Aethos Pro
We can't match sizes for these two: one of them has no stack and reach for the sizes shown.
What changes on the Specialized Aethos Pro
- 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
- +0.5°
- Steeper: sharper steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
We can't draw these frames yet. The Trek Madone numbers we have for size 56 are missing the reach, stack, chainstay length and wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | Trek Madone 56 | Specialized Aethos Pro 61 | Difference |
|---|---|---|---|
| Head tube angle | 73.5 | 74° | +0.5° |
| Seat tube angle | 73.3 | 73° | −0.3° |
| Effective top tube | 559 | 595mm | +36 mm |
| Standover | 768 | 824mm | +56 mm |
| Seat tube length | 525 | 567mm | +42 mm |
| Head tube length | 151 | 204mm | +53 mm |
| Reach | not listed | 408mm | |
| Stack | not listed | 612mm | |
| Chainstay length | not listed | 410mm | |
| Wheelbase | not listed | 1012mm | |
| BB drop | not listed | 72mm | |
| BB height | not listed | 268mm | |
| Fork length | not listed | 369mm |
Differences are the Specialized Aethos Pro minus the Trek Madone. Full charts: 2023 Trek Madone, 2025 Specialized Aethos Pro.
Where each sits in its class
Trek MadoneSpecialized Aethos Pro
AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted
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 MadoneMadone SLR 9 eTap | Specialized Aethos Pro |
|---|---|---|
| Frame | Trek Madone SLR | not listed |
| Fork | Trek Madone KVF | not listed |
| Shifter | SRAM RED | not listed |
| Cassette | SRAM XG-1290 | not listed |
| Chain | SRAM RED E1 | not listed |
| Crankset | SRAM Red | not listed |
| Bottom bracket | SRAM T47 | not listed |
| Wheelset | Bontrager Aeolus RSL 51 | not listed |
| Tire | Bontrager R4 | not listed |
| Bar tape | Bontrager Supertack Performance | not listed |
| Seatpost | Trek Madone aero | not listed |
| Saddle | Bontrager Aeolus Pro P2 RSL | not listed |
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