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Mountain bike sizing: Your complete mountain bike size guide

Looking to buy a mountain bike but not sure what size you need? Make sizing easy with our short, simple guide.

Matt Wragg
Matt Wragg Last update: 2025-10-24
Mountain bike sizing: Your complete mountain bike size guide How to size a mountain bike with chart included

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  • Matt Wragg
    About the author

    Matt Wragg

    Get to know Matt Wragg, the freelance photographer, writer, and self-proclaimed bicycle-breaker based in Nice, France. Despite unsuccessful attempts at XC, trials, 4X, and DH racing, Matt's passion for mountain biking never waned. After a stint in communications consulting, he decided to pursue his love for cycling and moved to New Zealand. Since then, he has traveled the world, chasing trails and building a successful career as a cycling photographer and writer. In 2021, he was diagnosed as autistic and has been coming to terms with it. His bike cellar is a true testament to his love for cycling, housing bikes that range from freeride to cargo.

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