2026 Specialized Roubaix SL8 Sport vs 2024 Trek Domane AL Rim
The 56 is the Trek Domane AL Rim size closest to your 54 Specialized Roubaix SL8 Sport. 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 Sport 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.
- Frame stack
- +6 mm
- Higher front end
- Frame reach
- −4 mm
- Shorter frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −0.4°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
We can't draw these frames yet. The Specialized Roubaix SL8 Sport numbers we have for size 54 are missing the wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | Specialized Roubaix SL8 Sport 54 | Trek Domane AL Rim 56 | Difference |
|---|---|---|---|
| Reach | 381 | 377 | −4 mm |
| Stack | 585 | 591 | +6 mm |
| Head tube angle | 72.3 | 71.9° | −0.4° |
| Seat tube angle | 74 | not listed | |
| Effective top tube | 550 | 554 | +4 mm |
| Chainstay length | 420 | 420 | ±0 mm |
| BB drop | 78 | 78 | ±0 mm |
| BB height | 270 | not listed | |
| Standover | 766 | 776 | +10 mm |
| Seat tube length | 465 | 525 | +60 mm |
| Fork length | 375 | not listed | |
| Head tube length | 122 | 175 | +53 mm |
| Wheelbase | not listed | 1018 |
Differences are the Trek Domane AL Rim minus the Specialized Roubaix SL8 Sport. Full charts: 2026 Specialized Roubaix SL8 Sport, 2024 Trek Domane AL Rim.
Where each sits in its class
Specialized Roubaix SL8 SportTrek 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 SportSL8 Sport | Trek Domane AL RimAL 2 Rim |
|---|---|---|
| Frame | Specialized FACT 10R | Trek Alpha |
| Fork | Specialized Future Shock 3.2 | Trek Domane |
| Shifter | Shimano 105 R7120 | Shimano Claris R2000 |
| Derailleur | Shimano 105 Di2, Shimano 105 R7100 | Shimano Claris R2000 |
| Cassette | Shimano 105 | Shimano HG-31 |
| Chain | Shimano SLX M7100 | Shimano Sora HG71 |
| Crankset | Shimano 105 | Shimano RS200 |
| Bottom bracket | Shimano Threaded BSA | Shimano UN26 |
| Wheelset | DT Swiss G540 | not listed |
| Tire | Specialized Mondo | Bontrager R1 Hard-Case Lite |
| Brake | Shimano CUES | not listed |
| Handlebar | Specialized Hover | Bontrager Comp VR-C |
| Stem | Specialized Future Pro | not listed |
| Grips | Supacaz Super Sticky Kush | not listed |
| Seatpost | Specialized Pavé | not listed |
| Saddle | Specialized Power Sport | Bontrager P3 Verse |
| Hub | not listed | Formula TK-31, Formula TK-32 |
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