2023 Specialized Aethos LTD vs 2023 Trek Madone SLR
The 50 is the Trek Madone SLR size closest to your 52 Specialized Aethos LTD. 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 LTD 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 LTD, 52Trek Madone SLR, 50Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Aethos LTD 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 LTD. Full charts: 2023 Specialized Aethos LTD, 2023 Trek Madone SLR.
Where each sits in its class
Specialized Aethos LTDTrek 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 LTDS-Works LTD | Trek Madone SLRSLR 6 |
|---|---|---|
| Frame | Specialized S-Works Aethos FACT | Trek Madone |
| Shifter | Campagnolo Super Record | Shimano Ultegra |
| Derailleur | Campagnolo Super Record | Shimano Ultegra |
| Cassette | Campagnolo Super Record | Shimano Ultegra |
| Chain | Campagnolo Super Record | Shimano 105 DI2 |
| Crankset | Campagnolo Super Record | Shimano Ultegra Mid Compact |
| Wheelset | Campagnolo Hyperon Ultra | Bontrager Aeolus Pro 51 |
| Tire | Specialized S-Works Turbo 2BR | Bontrager R3 Hard-Case Lite |
| Brake | Campagnolo Super Record | Shimano Ultegra |
| Seatpost | Roval Alpinist | Trek Madone |
| Saddle | Specialized S-Works Power | Bontrager Aeolus Elite |
| Fork | not listed | Trek Madone KVF |
| Chainring | not listed | Shimano Ultegra |
| Bottom bracket | not listed | Trek T47 |
| Rotor | not listed | Shimano Ultegra |
| Handlebar | not listed | Trek Madone Integrated |
| Stem | not listed | Trek Madone aero |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
