How to choose your MTB size?
Choosing the right MTB frame size for your bike is crucial — it determines your comfort and performance. There are several ways to determine your MTB size; the most reliable is to go by your inseam measurement.
- Time: 10 min
- Level: easy
Steps
- Get a tape measure and a thin, rigid object (a notebook, for example).
- Barefoot, stand with your back against a wall, heels touching it and 5 cm apart.
- Place the rigid object between your thighs, making sure it is horizontal and in contact with your perineum.
- Measure the distance between the floor and the top of your rigid object. This will give you your inseam measurement.
- Refer to the table below to find your bike size, which also corresponds to the seat tube size.
Probikeshop tip: depending on the MTB brand, not all sizes are necessarily available — in that case, choose the closest size. If you are between two sizes, refine your choice using your height.
| Rider Height | 1.47 m <> 1.62 m | 1.60 m <> 1.73 m | 1.71 m <> 1.83 m | 1.81 m <> 1.93 m | 1.91 m <> 2.00 m | ||||||
| Frame Size | Inseam | 57 cm <> 61 cm | 59 cm <> 68 cm | 66 cm <> 71 cm | 68 cm <> 76 cm | 73 cm <> 80 cm | 77 cm <> 84 cm | 81 cm <> 89 cm | 86 cm <> 93 cm | 90 cm <> 98 cm | 95 cm <> 100 cm |
| 13" / 33 cm | XS | XS | |||||||||
| 14" / 35.5 cm | XS | XS | XS | ||||||||
| 15" / 38 cm | S | S | S | ||||||||
| 16" / 40.5 cm | S | S | S | ||||||||
| 17" / 43 cm | M | M | M | ||||||||
| 18" / 46 cm | M | M | M | ||||||||
| 19" / 48 cm | L | L | L | ||||||||
| 20" / 51 cm | L | L | L | ||||||||
| 21" / 53 cm | XL | XL | XL | ||||||||
| 22" / 56 cm | XL | XL | |||||||||
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