Colnago TT2 geometryTime trial / Triathlon · 2026 · 4 sizes, from XS to L
The Colnago TT2 is a time trial / triathlon bike available in 4 sizes, from XS to L. Stack ranges from 468 to 523 mm and reach from 385 to 430 mm. Its geometry is low and long, with a racing fit. All sizes share 408 mm chainstays.
What size TT2 do I need?
Enter the stack and reach of a bike that fits you well and we will tell you which size is closest and how to set it up.
Enter your stack and reach to see which size fits you best.
Geometry chart by size
Measurements in mm and degrees, as published by Colnago. The ones that matter most for choosing a size are in bold.
| Size | XS | S | M | L |
|---|---|---|---|---|
| Stack | 468 | 473 | 501 | 523 |
| Reach | 385 | 400 | 415 | 430 |
| Head angle | 71.0° | 72.5° | 72.5° | 72.5° |
| Chainstay length | 408 | 408 | 408 | 408 |
| Wheelbase | 967 | 972 | 995 | 1,017 |
| Front centre | 571 | 575 | 599 | 620 |
| BB drop | 75 | 75 | 75 | 75 |
| Fork length | 367 | 367 | 367 | 367 |
| Fork offset | 43 | 43 | 43 | 43 |
| Trail | 70 | 62 | 62 | 62 |
| Standover | 766 | 771 | 801 | 824 |
| Seat angle (method not stated) | 76.5° | 76.5° | 77.0° | 77.0° |
Source: Colnago official website · data from 11 Nov 2026. Spot a mistake?
Stack and reach of every size
Higher means a taller front end; further right means a longer reach. The blue dot is your search.
Character of each size
Compared with other time trial / triathlon bikes. Further right means more of that quality.
Bikes with similar geometry (size S)
The closest size of other time trial / triathlon models, by stack and reach.
Frequently asked questions
What size TT2 do I need?
It depends on your position, not just your height. The most reliable way is to compare the stack and reach of a bike that fits you with those of each size (from 468/385 mm in size XS to 523/430 mm in size L). The size finder on this page shows the closest size and the stem and spacers you would need.
What are the stack and reach of the TT2 in size S?
Stack of 473 mm and reach of 400 mm.
Is the TT2 a racing or an endurance bike?
Racing. In size S its stack-to-reach ratio is at percentile 20 of time trial / triathlon bikes: a low, stretched position.