2025 Specialized Aethos FACT 10r Carbon vs 2023 Trek Madone SLR
The 47 is the Trek Madone SLR size closest to your 49 Specialized Aethos FACT 10r Carbon. 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 Trek Madone SLR
Compared with the Specialized Aethos FACT 10r Carbon in 49, the Trek Madone SLR in 47 places the top of the head tube 7 mm lower and about as far forward, relative to the bottom bracket.
- Frame stack
- −7 mm
- Lower front end
- Frame reach
- −2 mm
- About the same reach
- Wheelbase
- −1 mm
- About the same
- Head angle
- +0.3°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Aethos FACT 10r Carbon, 49Trek Madone SLR, 47Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Aethos FACT 10r Carbon 49 | Trek Madone SLR 47 | Difference |
|---|---|---|---|
| Reach | 375mm | 373 | −2 mm |
| Stack | 514mm | 507 | −7 mm |
| Head tube angle | 71.75° | 72.1 | +0.3° |
| Seat tube angle | 75.5° | 74.6 | −0.9° |
| Effective top tube | 508 | 512 | +4 mm |
| Chainstay length | 410mm | 410 | ±0 mm |
| Wheelbase | 973mm | 972 | −1 mm |
| BB drop | 74mm | 72 | −2 mm |
| BB height | 266mm | not listed | |
| Standover | 705mm | 692 | −13 mm |
| Seat tube length | 431mm | 424 | −7 mm |
| Fork length | 369mm | not listed | |
| Head tube length | 109mm | 100 | −9 mm |
Differences are the Trek Madone SLR minus the Specialized Aethos FACT 10r Carbon. Full charts: 2025 Specialized Aethos FACT 10r Carbon, 2023 Trek Madone SLR.
Where each sits in its class
Specialized Aethos FACT 10r CarbonTrek Madone SLR
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 FACT 10r CarbonFACT 10r Carbon | Trek Madone SLRSLR 6 |
|---|---|---|
| Frame | Specialized Aethos FACT | Trek Madone |
| Fork | Specialized FACT Carbon | Trek Madone KVF |
| Shifter | SRAM Force eTAP AXS | Shimano Ultegra |
| Derailleur | SRAM Force eTAP AXS | Shimano Ultegra |
| Cassette | SRAM Force | Shimano Ultegra |
| Chain | SRAM Force | Shimano 105 DI2 |
| Crankset | SRAM Force DUB | Shimano Ultegra Mid Compact |
| Chainring | SRAM Force | Shimano Ultegra |
| Bottom bracket | SRAM DUB BSA 68 | Trek T47 |
| Wheelset | Roval Alpinist CL II | Bontrager Aeolus Pro 51 |
| Tire | Specialized S-Works Turbo 2BR | Bontrager R3 Hard-Case Lite |
| Brake | SRAM Force eTAP AXS | Shimano Ultegra |
| Handlebar | Specialized S-Works Short & Shallow | Trek Madone Integrated |
| Stem | Specialized Pro SL | Trek Madone aero |
| Grips | Supacaz Super Sticky Kush | not listed |
| Seatpost | Roval Alpinist | Trek Madone |
| Saddle | Specialized Body Geometry Power | Bontrager Aeolus Elite |
| Rotor | not listed | Shimano Ultegra |
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