2025 Colnago TT1 Frame Kit vs 2023 Cervélo P-Series
The 51 is the Cervélo P-Series size closest to your M Colnago TT1 Frame Kit. 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 Cervélo P-Series
Compared with the Colnago TT1 Frame Kit in M, the Cervélo P-Series in 51 places the top of the head tube 15 mm higher and 8 mm further back, relative to the bottom bracket.
- Frame stack
- +15 mm
- Higher front end
- Frame reach
- −9 mm
- Shorter frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
We can't draw these frames yet. The Colnago TT1 Frame Kit numbers we have for size M are missing the wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | Colnago TT1 Frame Kit M | Cervélo P-Series 51 | Difference |
|---|---|---|---|
| Reach | 406.5 | 398 | −9 mm |
| Stack | 490.7 | 506 | +15 mm |
| Head tube angle | 72 | 72.5 | +0.5° |
| Seat tube angle | 77 | not listed | |
| Chainstay length | 400 | 405 | +5 mm |
| BB drop | 70 | 75 | +5 mm |
| BB height | 266 | not listed | |
| Wheelbase | not listed | 976 | |
| Standover | not listed | 758 | |
| Head tube length | not listed | 101 |
Differences are the Cervélo P-Series minus the Colnago TT1 Frame Kit. Full charts: 2025 Colnago TT1 Frame Kit, 2023 Cervélo P-Series.
Where each sits in its class
Colnago TT1 Frame KitCervélo P-Series
Each bike is ranked against the other triathlon 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 | Colnago TT1 Frame KitFrame Kit | Cervélo P-Series105 |
|---|---|---|
| Frame | Colnago TT1 | not listed |
| Seatpost | Colnago Aero | Cervélo SP23 |
| Fork | not listed | Cervélo P Fork |
| Shifter | not listed | microSHIFT Bar-end |
| Derailleur | not listed | Shimano 105 R7000 Front, Shimano 105 R7000 Rear |
| Cassette | not listed | Shimano 105 |
| Chain | not listed | Shimano HG601 |
| Crankset | not listed | Shimano FC-RS510 |
| Bottom bracket | not listed | FSA BBright thread together |
| Handlebar | not listed | Zipp Vuka Alumina Basebar |
| Headset | not listed | FSA IS2 |
| Saddle | not listed | Cervélo Tri Saddle |
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