2024 Specialized Aethos Comp vs 2023 Trek Madone SLR
The 50 is the Trek Madone SLR size closest to your 52 Specialized Aethos Comp. 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 Comp in 52, the Trek Madone SLR in 50 places the top of the head tube 6 mm lower and about as far forward, relative to the bottom bracket.
- Frame stack
- −6 mm
- Lower front end
- Frame reach
- −2 mm
- About the same reach
- Wheelbase
- −1 mm
- About the same
- Head angle
- −0.4°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Aethos Comp, 52Trek Madone SLR, 50Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Aethos Comp 52 | Trek Madone SLR 50 | Difference |
|---|---|---|---|
| Reach | 380mm | 378 | −2 mm |
| Stack | 527mm | 521 | −6 mm |
| Head tube angle | 72.5° | 72.1 | −0.4° |
| Seat tube angle | 74° | 74.6 | +0.6° |
| Chainstay length | 410mm | 410 | ±0 mm |
| Wheelbase | 975mm | 974 | −1 mm |
| BB drop | 74mm | 72 | −2 mm |
| BB height | 266mm | not listed | |
| Standover | 728mm | 711 | −17 mm |
| Seat tube length | 462mm | 453 | −9 mm |
| Fork length | 369mm | not listed | |
| Head tube length | 120mm | 111 | −9 mm |
| Effective top tube | not listed | 521 |
Differences are the Trek Madone SLR minus the Specialized Aethos Comp. Full charts: 2024 Specialized Aethos Comp, 2023 Trek Madone SLR.
Where each sits in its class
Specialized Aethos CompTrek 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 CompComp | Trek Madone SLRSLR 6 |
|---|---|---|
| Frame | Specialized Aethos | Trek Madone |
| Fork | Specialized FACT | Trek Madone KVF |
| Shifter | Shimano 105 R7170 | Shimano Ultegra |
| Derailleur | Shimano 105 R7150 Di2 | Shimano Ultegra |
| Cassette | Shimano 105 | Shimano Ultegra |
| Chain | Shimano SLX M7100 | Shimano 105 DI2 |
| Crankset | Shimano 105 R7100 | Shimano Ultegra Mid Compact |
| Bottom bracket | Shimano Threaded BSA BB | Trek T47 |
| Wheelset | DT Swiss R470 | Bontrager Aeolus Pro 51 |
| Tire | Turbo Pro | Bontrager R3 Hard-Case Lite |
| Brake | Shimano 105, Shimano 105 R7170 | Shimano Ultegra |
| Handlebar | Specialized Shallow Drop | Trek Madone Integrated |
| Stem | Specialized Pro SL | Trek Madone aero |
| Bar tape | Specialized Roubaix S-Wrap | not listed |
| Seatpost | Roval Alpinist | Trek Madone |
| Saddle | Specialized Power Sport | Bontrager Aeolus Elite |
| Chainring | not listed | Shimano Ultegra |
| Rotor | not listed | Shimano Ultegra |
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