2026 Specialized Tarmac SL8 Expert vs 2025 Colnago Y1Rs
The XL is the Colnago Y1Rs size closest to your 58 Specialized Tarmac SL8 Expert. 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 Expert in 58, the Colnago Y1Rs in XL 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
- +2 mm
- About the same reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- −2 mm
- About the same
The two frames
Only the Specialized Tarmac SL8 Expert is drawn. The Colnago Y1Rs numbers we have for size XL are missing the wheelbase.
Geometry side by side
| Measurement | Specialized Tarmac SL8 Expert 58 | Colnago Y1Rs XL | Difference |
|---|---|---|---|
| Reach | 402mm | 404 | +2 mm |
| Stack | 591mm | 590 | −1 mm |
| Head tube angle | 73.5° | 73.5 | ±0.0° |
| Seat tube angle | 73.5° | 73.0 | −0.5° |
| Effective top tube | 577mm | not listed | |
| Chainstay length | 410mm | 408 | −2 mm |
| Wheelbase | 1006mm | not listed | |
| BB drop | 72mm | 72 | ±0 mm |
| BB height | 268mm | not listed | |
| Standover | 808mm | not listed | |
| Seat tube length | 515mm | not listed | |
| Fork length | 370mm | 376.5 | +7 mm |
| Head tube length | 184mm | 176.5 | −8 mm |
Differences are the Colnago Y1Rs minus the Specialized Tarmac SL8 Expert. Full charts: 2026 Specialized Tarmac SL8 Expert, 2025 Colnago Y1Rs.
Where each sits in its class
Specialized Tarmac SL8 ExpertColnago 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 ExpertExpert | Colnago Y1RsY1RS |
|---|---|---|
| Frame | Specialized Tarmac SL8 FACT | Colnago Y1Rs |
| Shifter | SRAM Force AXS E1 HRD | Shimano Dura-Ace R9200 |
| Derailleur | SRAM Force AXS E1 | Shimano Dura-Ace R9200 Di2 |
| Cassette | SRAM Force XG-1270 | not listed |
| Chain | SRAM Force E1 | Shimano XTR M9200 |
| Crankset | SRAM Force E1 | Shimano Dura-Ace R9200 |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | Roval C38 | Vision SC45 |
| Tire | Specialized S-Works Turbo | Pirelli P Zero Race |
| Brake | SRAM Force AXS E1 | Shimano Dura-Ace R9200 |
| Headset | Specialized SL7 | not listed |
| Seatpost | Specialized S-Works Tarmac SL8 | not listed |
| Saddle | Specialized Power Expert | Prologo Scratch M5 |
| Stem | not listed | Colnago YY.01 |
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