Bell - Helmet Size Chart

Generally Bell helmets fit acording to the size chart however differences in head shapes can cause helmets to feel tight or uncomfortable on some people.

Size Chart

Head Size (cm)
Small 51-55
Medium 55-59
Large 59-61


How to Measure Your Helmet Size


A correctly fitting helmet is incredibly important. It ensures that the helmet functions as designed and offers the best level of protection possible. Because no two helmet manufacturers make their helmets the same it is important to measure your actual head size in centimetres (a small in one brand may be a medium in another). Follow the instructions below to ensure that you get the right size and correctly fitting helmet.

  • Measure around your head using a soft tape measure.
  • Ensure the tape passes across the centre of the forehead, above the ears and over the natural bump at the back of the head.
  • Allow 1cm extra for long or thick hair, or if you intend to wear a beanie or balaclava under the helmet.
  • If you are at the top end of any of the sizes, we advise going for the larger size to accommodate different head shapes. If your head is exactly the same circumference as the helmet, because your head is unlikely to be the exact shape of the helmet it's unlikely to fit perfectly so a larger size will fit better.

  • Still not sure what size to get? We're here to help!

    Check out our Buying Guides for technical tips and tricks.

    Try several and use our Low Cost 30 Day Returns.

    Visit our Help Centre for advice from our team.