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Full Face Helmets

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Not sure what sized bike is best?

Answer a few short questions and we'll make a recommendation on which size is best for you.

Find Your Size

Step 1: Measure your height

  • Take off your shoes
  • Stand with your back straight against a wall
  • Balance a book on your head to mark your height on the wall
  • Measure your height by the distance from the floor to the mark
cm

Find Your Size

Step 2: Adjust your inseam

  • Based on your height, we’ve calculated a starting point.
  • You can measure your inseam by tucking a book between your legs so there is pressure but it isn’t uncomfortable.
  • Inseam typically falls with 5cm of the average.
cm

Find Your Size

Your results

For the we suggest the following size.

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Adjusted Height: --

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We have an awesome range of mountain bike helmets from all the best brands at New Zealand's best prices. Full face mountain bike helmets or downhill mountain bike helmets offer added protection to the front of the face while improving overall coverage of riders' heads. Convertible mountain bike helmets convert from half face helmets to full face helmets. You can be sure you're buying the best full face helmet at the best price with our Best Price Guarantee. Shop online with click & collect and delivery, and in store at your local 99 Bikes in Auckland, Christchurch & Wellington.