What size mountain bike is best for me?

A great fit goes a long way towards having a good time on the trail. Just like we don’t all wear the same size trousers, we don’t all ride the same-size frame. When you ride a bike that fits, you get more comfort and better control.

You may be used to choosing a bike size based on standover height or seat tube length. While those measurements are still worth considering, it’s more important to look at the Reach and Effective Top Tube measurements when comparing mountain bike sizes. You can find these measurements by scrolling to the geometry chart on each mountain bike’s detail page.

The easiest way to determine your frame size is by height, but many riders find that they are between sizes. Choosing to go up or down a size depends on your personal riding style and body proportions.

A bike with a longer reach will have a longer wheelbase. That makes it more stable, especially on high-speed descents. That’s great for riders who like to plough through rather than pop over rough stuff on the trail. If you have a relatively long torso or arms for your height, you may find that a longer reach gives you a roomier, more comfortable cockpit.

A bike with a shorter reach will have a shorter wheelbase. It’s not as stable, but it’s more nimble and easier to flick around. That’s great for riders with a more playful, active riding style who like to get off the ground and whip their wheels around. If you have a relatively short torso or arms for your height, you may find that a shorter reach makes it easier for you to hold the handlebars comfortably.