2023 Specialized Aethos FACT 12r Carbon vs 2023 Trek Madone SLR
The Trek Madone SLR size closest to your 54 is the 54. Compare the 54 instead
What changes on the Trek Madone SLR
Compared with the Specialized Aethos FACT 12r Carbon in 54, the Trek Madone SLR in 50 places the top of the head tube 23 mm lower and 6 mm further back, relative to the bottom bracket. Its wheelbase is 4 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −23 mm
- Lower front end
- Frame reach
- −6 mm
- Shorter frame reach
- Wheelbase
- −4 mm
- Shorter: quicker to change direction
- Head angle
- −0.9°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Aethos FACT 12r Carbon, 54Trek Madone SLR, 50Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Aethos FACT 12r Carbon 54 | Trek Madone SLR 50 | Difference |
|---|---|---|---|
| Reach | 384mm | 378 | −6 mm |
| Stack | 544mm | 521 | −23 mm |
| Head tube angle | 73° | 72.1 | −0.9° |
| Seat tube angle | 74° | 74.6 | +0.6° |
| Chainstay length | 410mm | 410 | ±0 mm |
| Wheelbase | 978mm | 974 | −4 mm |
| BB drop | 72mm | 72 | ±0 mm |
| BB height | 268mm | not listed | |
| Standover | 748mm | 711 | −37 mm |
| Seat tube length | 481mm | 453 | −28 mm |
| Fork length | 369mm | not listed | |
| Head tube length | 137mm | 111 | −26 mm |
| Effective top tube | not listed | 521 |
Differences are the Trek Madone SLR minus the Specialized Aethos FACT 12r Carbon. Full charts: 2023 Specialized Aethos FACT 12r Carbon, 2023 Trek Madone SLR.
Where each sits in its class
Specialized Aethos FACT 12r 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 12r CarbonS-Works FACT 12r Carbon | Trek Madone SLRSLR 6 |
|---|---|---|
| Frame | Specialized S-Works Aethos FACT | Trek Madone |
| Seatpost | Roval Alpinist | Trek Madone |
| Fork | not listed | Trek Madone KVF |
| Shifter | not listed | Shimano Ultegra |
| Derailleur | not listed | Shimano Ultegra |
| Cassette | not listed | Shimano Ultegra |
| Chain | not listed | Shimano 105 DI2 |
| Crankset | not listed | Shimano Ultegra Mid Compact |
| Chainring | not listed | Shimano Ultegra |
| Bottom bracket | not listed | Trek T47 |
| Wheelset | not listed | Bontrager Aeolus Pro 51 |
| Tire | not listed | Bontrager R3 Hard-Case Lite |
| Brake | not listed | Shimano Ultegra |
| Rotor | not listed | Shimano Ultegra |
| Handlebar | not listed | Trek Madone Integrated |
| Stem | not listed | Trek Madone aero |
| Saddle | not listed | Bontrager Aeolus Elite |
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