2025 Specialized Tarmac SL8 Pro Shimano vs 2025 Colnago Y1Rs
The XL is the Colnago Y1Rs size closest to your 61 Specialized Tarmac SL8 Pro Shimano. 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 Colnago Y1Rs
Compared with the Specialized Tarmac SL8 Pro Shimano in 61, the Colnago Y1Rs in XL places the top of the head tube 22 mm lower and 4 mm further back, relative to the bottom bracket.
- Frame stack
- −22 mm
- Lower front end
- Frame reach
- −4 mm
- Shorter frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- −2 mm
- About the same
The two frames
Only the Specialized Tarmac SL8 Pro Shimano is drawn. The Colnago Y1Rs numbers we have for size XL are missing the wheelbase.
Geometry side by side
| Measurement | Specialized Tarmac SL8 Pro Shimano 61 | Colnago Y1Rs XL | Difference |
|---|---|---|---|
| Reach | 408mm | 404 | −4 mm |
| Stack | 612mm | 590 | −22 mm |
| Head tube angle | 74° | 73.5 | −0.5° |
| Seat tube angle | 73° | 73.0 | ±0.0° |
| Chainstay length | 410mm | 408 | −2 mm |
| Wheelbase | 1013mm | not listed | |
| BB drop | 72mm | 72 | ±0 mm |
| BB height | 268mm | not listed | |
| Standover | 834mm | not listed | |
| Seat tube length | 545mm | not listed | |
| Fork length | 370mm | 376.5 | +7 mm |
| Head tube length | 204mm | 176.5 | −28 mm |
Differences are the Colnago Y1Rs minus the Specialized Tarmac SL8 Pro Shimano. Full charts: 2025 Specialized Tarmac SL8 Pro Shimano, 2025 Colnago Y1Rs.
Where each sits in its class
Specialized Tarmac SL8 Pro ShimanoColnago Y1Rs
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 Pro ShimanoPro - Shimano Ultegra Di2 | Colnago Y1RsY1RS |
|---|---|---|
| Frame | Specialized Tarmac SL8 FACT | Colnago Y1Rs |
| Shifter | Shimano Ultegra R8170 Di2 | Shimano Dura-Ace R9200 |
| Derailleur | Shimano Ultegra R8150 Di2 | Shimano Dura-Ace R9200 Di2 |
| Cassette | Shimano Ultegra | not listed |
| Chain | Shimano Ultegra | Shimano XTR M9200 |
| Crankset | Shimano Ultegra R8100 | Shimano Dura-Ace R9200 |
| Wheelset | Roval Rapide CL II | Vision SC45 |
| Tire | Specialized S-Works Turbo | Pirelli P Zero Race |
| Brake | Shimano Ultegra R8170 Di2 | Shimano Dura-Ace R9200 |
| Handlebar | Roval Rapide Cockpit | not listed |
| Seatpost | Specialized S-Works Tarmac SL8 | not listed |
| Saddle | Specialized Power | Prologo Scratch M5 |
| Stem | not listed | Colnago YY.01 |
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