2027 Trek Domane SLR No. Gen 5 vs 2025 Specialized Roubaix SL8 Pro
The 44 is the Specialized Roubaix SL8 Pro size closest to your XS Trek Domane SLR No. Gen 5. 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 Specialized Roubaix SL8 Pro
Compared with the Trek Domane SLR No. Gen 5 in XS, the Specialized Roubaix SL8 Pro in 44 places the top of the head tube 19 mm higher and 15 mm further back, relative to the bottom bracket. Its wheelbase is 7 mm longer, which can contribute to stability at speed.
- Frame stack
- +19 mm
- Higher front end
- Frame reach
- −15 mm
- Shorter frame reach
- Wheelbase
- +7 mm
- Longer: steadier at speed
- Head angle
- −2.0°
- Slacker: calmer steering
- Chainstays
- −2 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Domane SLR No. Gen 5 numbers we have for size XS are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Domane SLR No. Gen 5 XS | Specialized Roubaix SL8 Pro 44 | Difference |
|---|---|---|---|
| Reach | 368 | 353mm | −15 mm |
| Stack | 524 | 543mm | +19 mm |
| Head tube angle | 71.3° | 69.3° | −2.0° |
| Effective top tube | 520 | not listed | |
| Chainstay length | 420 | 418mm | −2 mm |
| Wheelbase | 987 | 994mm | +7 mm |
| BB drop | 80 | 80mm | ±0 mm |
| Standover | 721 | 686mm | −35 mm |
| Seat tube length | 444 | 365mm | −79 mm |
| Head tube length | 106 | 90mm | −16 mm |
| Seat tube angle | not listed | 75° | |
| BB height | not listed | 269mm | |
| Fork length | not listed | 375mm |
Differences are the Specialized Roubaix SL8 Pro minus the Trek Domane SLR No. Gen 5. Full charts: 2027 Trek Domane SLR No. Gen 5, 2025 Specialized Roubaix SL8 Pro.
Where each sits in its class
Trek Domane SLR No. Gen 5Specialized Roubaix SL8 Pro
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 | Trek Domane SLR No. Gen 5SLR 9 AXS No. 76 Gen 5 | Specialized Roubaix SL8 ProSL8 Pro |
|---|---|---|
| Frame | Trek Domane SLR | not listed |
| Fork | Trek Domane SLR | Specialized Future Shock 3.3 |
| Shifter | SRAM RED AXS E1 | Shimano Ultegra R8170 Di2 |
| Derailleur | SRAM RED AXS E1 | Shimano Ultegra R8150 Di2 |
| Cassette | SRAM RED XG-1290 E1 | Shimano Ultegra |
| Chain | SRAM E1 Red | Shimano XT M8100 |
| Crankset | SRAM E1 RED AXS | Shimano Ultegra R8100 |
| Bottom bracket | SRAM DUB | not listed |
| Battery | SRAM AXS | not listed |
| Wheelset | Bontrager Aeolus RSL 37 | Roval Terra CL II |
| Tire | Bontrager Kwaremont | Specialized S-Works Mondo 2BR |
| Rotor | SRAM Paceline | not listed |
| Handlebar | Bontrager Pro Riser | not listed |
| Stem | Trek RCS | Specialized Future |
| Seatpost | Bontrager RSL | Specialized S-Works Pave Seat post |
| Saddle | Trek Aeolus RSL | Specialized Power Pro Mirror |
| Brake | not listed | Shimano Ultegra |
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
