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OneK Defender Helmet Liners

  • Black » Extra Extra Large £18.80
  • Black » Extra Large £18.80
  • Black » Extra Small £18.80
  • Black » Large £18.80
  • Black » Medium £18.80
  • Black » Small £18.80

Selection of 6 products from



If a One K™ Helmet does not come in your size, you can easily change the liner for a perfect fit. Our liners also provide ultimate flexibility for growing children, shared helmets, or women who wear hair differently for schooling and show! Three shells make up all sizes. The base shells are Medium, Large and X-Large. Use the Medium size helmet with a Small or X-Small liner to change the fit of the Medium helmet into a Small or X-Small. Use the Large size helmet with an X-Large liner to change the fit to X-Large. Use the X-Large size helmet with the XX-Large liner to change the fit to XX-Large.

Need help or advice? Contact us:

  • Landline: 01582 842096
  • Freephone*: 0800 084 2608
  • Mon - Fri: 8:30am - 6:00pm
  • Sat: 9:00am - 1:00pm
  • Email:

All prices include VAT where applicable. *The freephone number is free from most UK landlines only, mobiles are usually charged so we'd recommend calling our landline from your mobile or internationally.

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