2025 Specialized Tarmac SL8 LTD Bull TdF vs 2023 Trek Madone SLR
The 50 is the Trek Madone SLR size closest to your 52 Specialized Tarmac SL8 LTD Bull TdF. 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 Tarmac SL8 LTD Bull TdF 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 Tarmac SL8 LTD Bull TdF, 52Trek Madone SLR, 50Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Tarmac SL8 LTD Bull TdF 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 | 746mm | 711 | −35 mm |
| Seat tube length | 456mm | 453 | −3 mm |
| Fork length | 370mm | not listed | |
| Head tube length | 120mm | 111 | −9 mm |
| Effective top tube | not listed | 521 |
Differences are the Trek Madone SLR minus the Specialized Tarmac SL8 LTD Bull TdF. Full charts: 2025 Specialized Tarmac SL8 LTD Bull TdF, 2023 Trek Madone SLR.
Where each sits in its class
Specialized Tarmac SL8 LTD Bull TdFTrek 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 Tarmac SL8 LTD Bull TdFS-Works LTD Red Bull 2025 TdF | Trek Madone SLRSLR 6 |
|---|---|---|
| Frame | Specialized S-Works Tarmac SL8 FACT | Trek Madone |
| Shifter | SRAM RED AXS | Shimano Ultegra |
| Derailleur | SRAM RED AXS E1, SRAM RED E1 | Shimano Ultegra |
| Cassette | SRAM RED XG-1290 E1 | Shimano Ultegra |
| Chain | SRAM Red | Shimano 105 DI2 |
| Crankset | SRAM RED AXS Power Meter | Shimano Ultegra Mid Compact |
| Bottom bracket | SRAM DUB | Trek T47 |
| Wheelset | Roval Rapide CLX | Bontrager Aeolus Pro 51 |
| Tire | Specialized S-Works Turbo TLR | Bontrager R3 Hard-Case Lite |
| Brake | Specialized override | Shimano Ultegra |
| Handlebar | Roval Rapide Cockpit | Trek Madone Integrated |
| Saddle | Specialized S-Works Power | Bontrager Aeolus Elite |
| Fork | not listed | Trek Madone KVF |
| Chainring | not listed | Shimano Ultegra |
| Rotor | not listed | Shimano Ultegra |
| Stem | not listed | Trek Madone aero |
| Seatpost | not listed | Trek Madone |
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
