TT1
The current Colnago TT1 is a modern time-trial platform built around a clear shift from the brand’s earlier rim-brake era. This generation, introduced for model year 2023, moves to disc brakes and a monocoque carbon chassis with a carbon bayonet fork, fully integrated cable routing, and 12x100/12x142 thru-axles. It is a purpose-built TT machine rather than an all-round aero road bike, with details such as the very low rear-stay layout, horizontal top tube, and TT1-specific integrated bottle and bottle-cage system underscoring its focus on aerodynamic efficiency and race-day packaging.
Geometry & fit.
3 sizes published.
The TT1’s geometry is firmly in line with a dedicated time-trial fit. Across the three listed sizes, stack runs from 475 mm to 527 mm while reach stretches from 393 mm to 424 mm, giving the bike a long-and-low front end suited to aggressive aero positions. The seat tube angle is a consistent 77 degrees in every size, which supports a forward pedaling position typical of TT setups and helps riders maintain power while rotated over the bottom bracket. Effective top tube lengths of 503 mm, 524 mm, and 546 mm also point to a compact cockpit relationship once extensions and pad positions are factored in.
Where the handlebar sits relative to the bottom bracket — the single most important fit pair.
01Fit geometry5 values
03Handling geometry5 values
Which size should I buy?
Slide your height to see the recommended size. GearWise's fit algorithm works from the published stack, reach, and ETT — the brand's own recommendation may differ.
→Calculated from GearWise's own stack / reach / ETT algorithm — the brand's size chart may recommend a different size, and a proper bike fit beats any calculator.
The lineup.
2 builds, ranging $7,500 – $8,462.
Build information is limited in the provided data. Colnago appears to present the TT1 primarily as a current time-trial model available through its dealer network, but no complete build tiers, prices, or component-level differences are listed here. What can be said from the platform details is that the frame is designed around contemporary TT hardware standards, including disc brakes, thru-axles, a BSA 68 mm bottom bracket, integrated routing, and the model-specific bottle system.
