2025 Specialized Roubaix SL8 LTD vs 2024 Trek Domane AL Rim
The 56 is the Trek Domane AL Rim size closest to your 54 Specialized Roubaix SL8 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 Domane AL Rim
Compared with the Specialized Roubaix SL8 LTD in 54, the Trek Domane AL Rim in 56 places the top of the head tube 6 mm higher and 4 mm further back, relative to the bottom bracket. Its wheelbase is 13 mm longer, which can contribute to stability at speed.
- Frame stack
- +6 mm
- Higher front end
- Frame reach
- −4 mm
- Shorter frame reach
- Wheelbase
- +13 mm
- Longer: steadier at speed
- Head angle
- −0.4°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
Only the Specialized Roubaix SL8 LTD is drawn. The Trek Domane AL Rim numbers we have for size 56 are missing the seat angle.
Geometry side by side
| Measurement | Specialized Roubaix SL8 LTD 54 | Trek Domane AL Rim 56 | Difference |
|---|---|---|---|
| Reach | 381mm | 377 | −4 mm |
| Stack | 585mm | 591 | +6 mm |
| Head tube angle | 72.3° | 71.9° | −0.4° |
| Seat tube angle | 74° | not listed | |
| Effective top tube | 550mm | 554 | +4 mm |
| Chainstay length | 420mm | 420 | ±0 mm |
| Wheelbase | 1005mm | 1018 | +13 mm |
| BB drop | 78mm | 78 | ±0 mm |
| BB height | 270mm | not listed | |
| Standover | 766mm | 776 | +10 mm |
| Seat tube length | 465mm | 525 | +60 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 122mm | 175 | +53 mm |
Differences are the Trek Domane AL Rim minus the Specialized Roubaix SL8 LTD. Full charts: 2025 Specialized Roubaix SL8 LTD, 2024 Trek Domane AL Rim.
Where each sits in its class
Specialized Roubaix SL8 LTDTrek Domane AL Rim
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 Roubaix SL8 LTDS-Works SL8 LTD | Trek Domane AL RimAL 2 Rim |
|---|---|---|
| Fork | Specialized Future Shock 3.3 | Trek Domane |
| Shifter | SRAM Red AXS | Shimano Claris R2000 |
| Derailleur | SRAM Red AXS | Shimano Claris R2000 |
| Cassette | SRAM RED XG-1290 | Shimano HG-31 |
| Chain | SRAM RED | Shimano Sora HG71 |
| Crankset | SRAM RED AXS Power Meter | Shimano RS200 |
| Bottom bracket | SRAM DUB | Shimano UN26 |
| Wheelset | Roval Terra CLX II | not listed |
| Tire | Specialized S-Works Mondo 2BR | Bontrager R1 Hard-Case Lite |
| Brake | SRAM RED | not listed |
| Stem | Specialized S-Works Future | not listed |
| Seatpost | Specialized S-Works Pave Seat post | not listed |
| Saddle | Specialized S-Works Power | Bontrager P3 Verse |
| Frame | not listed | Trek Alpha |
| Hub | not listed | Formula TK-31, Formula TK-32 |
| Handlebar | not listed | Bontrager Comp VR-C |
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