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