Mountain Bike Sizing Guide
MTB's are engineered for off-road riding. Traditionally they come with a 26" wheel, but more recently we've seen the launch of 29" and 27.5" (650b) wheeled bikes. These new sizes offer more speed and are generally better at soaking up the bumps. MTB sizes are measured in inches or as S, M, and L frames, but for more information about MTBs see our buying guides.
What size mountain bike do I need?
This handy chart should show you the right size of MTB you need based on your height. Measure your height
accurately and
check the manufacturer’s measurements too. You can also visit us in store to speak to an experienced member
of staff.
| Rider Height | Suggested Mountain Frame Size | |||
|---|---|---|---|---|
| Feet & Inches | Centimetres | Frame Size (inches) | Frame Size (cm) | Frame Size |
| 4'10" - 5'2" | 148cm - 158cm | 13" - 14" | 33 - 37 | View all X-Small Bikes |
| 5'2" - 5'6" | 158cm - 168cm | 15" - 16" | 38 - 42 | View all Small Bikes |
| 5'6" - 5' 10" | 168cm - 178cm | 17" - 18" | 43 - 47 | View all Medium Bikes |
| 5'10" - 6'1" | 178cm - 185cm | 19" - 20" | 48 - 52 | View all Large Bikes |
| 6'1" - 6'4" | 185cm - 193cm | 21" - 22" | 53 - 57 | View all X-Large Bikes |
| 6'4" - 6'6" | 193cm - 198cm | 23" - 24" | 58 - 61 | View all XX-Large Bikes |
Women's MTB sizing
Women’s MTBs tend to be shorter in length, have narrower handlebars and smaller frame sizes. They also have specific saddles and often have their own colour scheme too. Like other MTBs, these designs are measured in the same way (from the centre of the bottom bracket to the top of the seat tube) but there’s no reason why you shouldn’t try a unisex MTB.
| Rider Height | Suggested Women's Mountain Frame Size | |||
|---|---|---|---|---|
| Feet & Inches | Centimetres | Frame Size (inches) | Frame Size (cm) | Frame Size |
| 4'10" - 5'2" | 148cm - 158cm | 13" - 14" | 33 - 37 | View all X-Small Bikes |
| 5'2" - 5'6" | 158cm - 168cm | 15" - 16" | 38 - 42 | View all Small Bikes |
| 5'7" - 5'9" | 168cm - 178cm | 17" - 18" | 43 - 47 | View all Medium Bikes |
| 5'10" - 6'1" | 178cm - 185cm | 19"+ | 48 + | View all Large Bikes |
How are MTB's measured?
MTB's are measured from the centre of the bottom bracket (BB) to the top of the seat tube. To give a rider more stand over height, MTB top tubes often slope down and join the seat tube lower than road bikes. So it’s worth taking your inside leg measurement and comparing it to the manufacturers model. Always check the manufacturer’s measurements or visit a store to speak to an experienced member of staff.
