2023 Specialized Roubaix SL8 Comp vs 2025 Pinarello X5 Shimano
The 450 is the Pinarello X5 Shimano size closest to your 44 Specialized Roubaix SL8 Comp. 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 Pinarello X5 Shimano
Compared with the Specialized Roubaix SL8 Comp in 44, the Pinarello X5 Shimano in 450 places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket.
- Frame stack
- −1 mm
- About the same height
- Frame reach
- −1 mm
- About the same reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- +1.2°
- Steeper: sharper steering
- Chainstays
- +4 mm
- Longer: more planted
The two frames
Only the Specialized Roubaix SL8 Comp is drawn. The Pinarello X5 Shimano numbers we have for size 450 are missing the wheelbase.
Geometry side by side
| Measurement | Specialized Roubaix SL8 Comp 44 | Pinarello X5 Shimano 450 | Difference |
|---|---|---|---|
| Reach | 353 | 352.1 | −1 mm |
| Stack | 540 | 539.2 | −1 mm |
| Head tube angle | 69.3 | 70.5 | +1.2° |
| Seat tube angle | 75 | 74.5 | −0.5° |
| Effective top tube | 503 | 509 | +6 mm |
| Chainstay length | 418 | 422 | +4 mm |
| Wheelbase | 994 | not listed | |
| BB height | 269 | not listed | |
| Standover | 686 | not listed | |
| Seat tube length | 365 | 450 | +85 mm |
| Head tube length | 90 | 128 | +38 mm |
| BB drop | not listed | 72 | |
| Fork length | not listed | 375 |
Differences are the Pinarello X5 Shimano minus the Specialized Roubaix SL8 Comp. Full charts: 2023 Specialized Roubaix SL8 Comp, 2025 Pinarello X5 Shimano.
Where each sits in its class
Specialized Roubaix SL8 CompPinarello X5 Shimano
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 CompSL8 Comp | Pinarello X5 ShimanoShimano 105 Di2 |
|---|---|---|
| Frame | Specialized FACT 10R | Pinarello X5 |
| Fork | Specialized Future Shock 3.2 | not listed |
| Shifter | Shimano 105 | Shimano 105 Di2 |
| Derailleur | Shimano 105 | Shimano 105 Di2 |
| Cassette | Shimano 105 | Shimano 105 |
| Chain | Shimano 105 | Shimano 105 |
| Crankset | Shimano 105 | Shimano 105 Di2 |
| Chainring | Shimano 105 | not listed |
| Bottom bracket | Shimano 105 | Shimano 105 |
| Wheelset | DT Swiss G540 | Fulcrum Racing 800 DB |
| Tire | S Works Mondo, S Works Mondo 2BR | Pirelli P7 Sport |
| Brake | Shimano 105 | Shimano 105 |
| Rotor | Shimano 105 | Shimano 105 |
| Handlebar | Specialized Hover | MOST Jaguar XA TiCR |
| Stem | Specialized Future Stem | Tiger Aero Alu TiCR |
| Bar tape | Supacaz Super Sticky Kush | MOST Ultragrip Evo |
| Seatpost | Specialized S-Works Pavé | not listed |
| Saddle | Specialized Body Geometry Power Sport | not listed |
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
