What size mountain bike to choose Rockrider

What size mountain bike to choose

Choosing the right mountain bike size is vital for comfort and performance. Follow our guide to find your fit and avoid mistakes!

Finding the perfect size is key to comfort and performance. A well-fitted bike prevents injury and ensures a great ride. Ready? Follow these steps to find the mountain bike size that is right for you.

Step 1: Measure yourself (properly)

Before choosing the right mountain bike size, it's essential to measure yourself accurately.
Get some measuring tape and stand with your back against a wall.

Stand straight with your back against the wall, looking ahead. Place your heels against the wall with a slight gap between them. Ask someone to help measure your height from your heels to the top of your head.

Step 2: Refer to the size guide

Right, so you now know your size! Now, with the measurement you’ve taken, the simplest step is to refer to the size guide that matches your MTB style.

There are specific size guides depending on your mountain biking discipline: Are you more into Trail MTB, Cross Country MTB or All-Mountain MTB riding?

Quick tip: To ensure the frame fits, mount the bike and place your feet flat on the ground. The bottom of your inseam should be six to eight centimetres above the top tube of the frame.

Important:

The mountain bike sizes we recommend are indicative and are specifically tailored for Rockrider MTB models. These sizes may vary depending on your body shape or be adjusted with steering components (like the stem or seat post).

Some MTB models do not offer XS or S sizes. Be sure to check the size availability either on the website or in-store.

Caught between two sizes?

Don’t worry, it's not a problem! To help you choose between two MTB sizes, consider your riding style.

Trail MTB or All-Mountain MTB:
If you're looking for comfort and ease of handling, go for the smaller size, which will give you a more upright riding position.
If you want to optimize your performance and pedalling efficiency, choose the larger size, which will offer a more extended riding position.

Cross-Country MTB:
Opt for the exact recommended size to enhance your performance and stability.

For more precision...

If you're looking for a more precise size for your mountain bike, another useful measurement is your inseam. Since your torso and leg lengths may vary, measuring your inseam can provide a more accurate indication of the right MTB size for you.

- Just like when you measured your height, stand upright, barefoot, with your back and heels against the wall, and your legs slightly apart.
- Place a book between your legs, as high as possible, with the book’s spine making contact with your perineum (the part that touches the saddle when you’re sitting on the bike).
- Measure the distance from the floor to the top of the book, making sure the measuring tape is parallel to the wall to avoid skewing the result (it's best to have someone help you with this step).

What size mountain bike to choose:measuring the saddle and bottom bracket height - Rockrider DECATHLON

Get your calculators out!

To calculate the correct frame height (FH) for your MTB based on your inseam (IS), you can use the following formula:

IS X 0.56 = FH

Match the result obtained to your MTB. To do so, measure the frame height by measuring the distance between the bottom bracket and the top of the frame following the vertical tube.

Each mountain biker is different, in terms of body shape, size and riding style. Therefore, the size of the mountain bike depends on individual usage and needs. It is an essential factor to consider before purchasing your mountain bike, as it determines proper positioning and ensures comfort and efficiency for successful rides!

Your body shape and riding style determine the right size. Measure carefully to ensure comfort and efficiency. You are now ready for a successful ride!

Choosing a Decathlon Rockrider mountain bike

How To Choose Your Mountain Bike?

XC (cross-country), All Mountain, DH (downhill or descent)… Mountain bikes come in all shapes and sizes to suit the different disciplines. Here are some tips to help you figure it all out...