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O’Neal Sierra II Helmet | White


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O’Neal Sierra II Helmet

O’Neal Sierra II Helmet, featuring polycarbonate/ABS construction, is designed for more aggressive adventure riding and varying terrain. The Sierra II Helmet includes an integrated face shield and a shorter peak visor for more diverse functionality.


  • Shell is constructed from ABS
  • Moisture wicking, removable/washable air channeled comfort liner
  • Vent holes for optimal ventilation
  • Integrated face shield
  • Height adjustable helmet shield
  • Padded chin strap with double-d safety lock
  • Meets DOT and ECE 22.05 safety standards
  • Designed for Street, Enduro, Side by Side and Adventure riding

L, M, S, XL, XXL


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