Specialized Demo Race geometryMTB · 2026 · 3 sizes, from S2 to S4
The Specialized Demo Race is a mtb bike available in 3 sizes, from S2 to S4. Stack ranges from 632 to 632 mm and reach from 426 to 466 mm. Its position sits between racing and endurance. All sizes share 438 mm chainstays.
What size Demo Race 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 Specialized. The ones that matter most for choosing a size are in bold.
| Size | S2 | S3 | S4 |
|---|---|---|---|
| Stack | 632 | 632 | 632 |
| Reach | 426 | 446 | 466 |
| Head tube length | 105 | 105 | 105 |
| Head angle | 62.8° | 62.8° | 62.8° |
| Chainstay length | 438 | 438 | 438 |
| Wheelbase | 1,239 | 1,259 | 1,279 |
| Front centre | 801 | 821 | 841 |
| BB drop | 25 | 25 | 25 |
| BB height | 350 | 350 | 350 |
| Fork offset | 56 | 56 | 56 |
| Trail | 130 | 130 | 130 |
| Seat tube (method not stated) | 394 | 420 | 420 |
| Seat angle (method not stated) | 78.2° | 76.8° | 76.8° |
Source: Specialized 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 mtb bikes. Further right means more of that quality.
Bikes with similar geometry (size S3)
The closest size of other mtb models, by stack and reach.
Frequently asked questions
What size Demo Race 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 632/426 mm in size S2 to 632/466 mm in size S4). 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 Demo Race in size S3?
Stack of 632 mm and reach of 446 mm.
Is the Demo Race a racing or an endurance bike?
In between. In size S3 its stack-to-reach ratio is at percentile 65 of mtb bikes: neither very low nor very tall.