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Mountain Bike Size Chart

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Mountain Bike Size Chart

Sizing a Mountain Bike Frame

Use this chart as a baseline, then be sure to look at the size chart specific to the bike brand you’re considering as bike sizes differ between brands.

While the size of the bike frame is the place to start, you’ll also want to consider geometry, intended use, and skill level in order to choose the right size. Once you’ve found the right size frame, you can adjust smaller components to fit.

*Keep in mind that mountain bike sizing is different from other kinds of bikes.


Rider Height (in)
Rider Height (cm)
Frame Size
Frame Size (in)
Frame Size (cm)
4' 10" - 5' 2"
148cm - 158cm
13" - 14"
33cm - 37cm
5' 3" - 5' 6"
159cm - 168cm
15" - 16"
38cm - 42cm
5' 7" - 5' 10"
169cm - 178cm
17" - 18"
43cm - 47cm
5' 11" - 6' 1"
179cm - 185cm
19" - 20"
48cm - 52cm
6' 2" - 6' 4"
186cm - 193cm
21" - 22"
53cm - 57cm
6' 4" +
194cm +
23" +
58cm +

How Are Mountain Bikes Sized?

Mountain bike sizes are categorized as Small, Medium, Large, and then manufacturers give their own size recommendations based roughly on your height.

Sizing Up Or Sizing Down Your Mountain Bike

If, based on your height, you find that you’re in between mountain bike sizes, you have two choices.

Sizing Up: if you’re relatively strong and flexible, and your riding style is rather aggressive, you’ll want to size up for a challenge. Also, if you have a longer torso, size up to a longer wheelbase for a better fit. Keep in mind, the low riding position can be physically taxing. 

Sizing Down: smaller sized mountain bikes have a shorter reach and a slightly shorter wheelbase so you might need to extend your seat-post in order to get the best pedaling position. Longer legs, less flexibility or you prefer a more upright position? You’ll likely find a shorter bike to be more comfortable and easier to ride for long periods.

Ride on!


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