2025 Specialized Tarmac SL8 LTD Forward Collection vs 2025 Colnago Y1Rs
The XL is the Colnago Y1Rs size closest to your 58 Specialized Tarmac SL8 LTD Forward Collection. 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 LTD Forward Collection 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 LTD Forward Collection is drawn. The Colnago Y1Rs numbers we have for size XL are missing the wheelbase.
Geometry side by side
| Measurement | Specialized Tarmac SL8 LTD Forward Collection 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 LTD Forward Collection. Full charts: 2025 Specialized Tarmac SL8 LTD Forward Collection, 2025 Colnago Y1Rs.
Where each sits in its class
Specialized Tarmac SL8 LTD Forward CollectionColnago 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 LTD Forward CollectionS-Works LTD Forward 50 Collection | Colnago Y1RsY1RS |
|---|---|---|
| Frame | Specialized S-Works Tarmac SL8 FACT | Colnago Y1Rs |
| Shifter | Shimano Dura-Ace R9270 | Shimano Dura-Ace R9200 |
| Derailleur | Shimano Dura-Ace R9250 | Shimano Dura-Ace R9200 Di2 |
| Cassette | Shimano Dura-Ace | not listed |
| Chain | Shimano Dura-Ace | Shimano XTR M9200 |
| Crankset | Shimano Dura-Ace R9200 | Shimano Dura-Ace R9200 |
| Tire | Specialized S-Works Turbo Rapidair 2Br | Pirelli P Zero Race |
| Brake | Shimano Dura-Ace R9270 | Shimano Dura-Ace R9200 |
| Handlebar | Roval Rapide Cockpit | not listed |
| Stem | Roval Rapide Cockpit | Colnago YY.01 |
| Headset | Specialized SLT | not listed |
| Saddle | Specialized S-Works Power | Prologo Scratch M5 |
| Wheelset | not listed | Vision SC45 |
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