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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.

Features:

  • Polycarbonate/ABS Shell construction
  • 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-s safety lock
  • Meets DOT and ECE 22.05 safety standards
Product Style RevZilla Item # Store Sku MFR. Product # Availability
Product Style Black/Grey / XS RevZilla Item #10150838 Store Sku416223 MFR. Product #0818-701 AvailabilityAvailable: Ships in 5-7 business days
Product Style Black/Grey / SM RevZilla Item #10150839 Store Sku416224 MFR. Product #0818-702 AvailabilityAvailable: Ships in 5-7 business days
Product Style Black/Grey / MD RevZilla Item #10150840 Store Sku416225 MFR. Product #0818-703 AvailabilityAvailable: Ships in 5-7 business days
Product Style Black/Grey / LG RevZilla Item #10150841 Store Sku416226 MFR. Product #0818-704 AvailabilityAvailable: Ships in 5-7 business days
Product Style Black/Grey / XL RevZilla Item #10150842 Store Sku416227 MFR. Product #0818-705 AvailabilityIn Stock: Ships within 24 hours
Product Style Black/Grey / 2XL RevZilla Item #10150843 Store Sku416228 MFR. Product #0818-706 AvailabilityIn Stock: Ships within 24 hours
Product Style XS / Grey/Black/Red RevZilla Item #10150832 Store Sku416217 MFR. Product #0818-011 AvailabilityIn Stock: Ships within 24 hours
Product Style SM / Grey/Black/Red RevZilla Item #10150833 Store Sku416218 MFR. Product #0818-012 AvailabilityAvailable: Ships in 5-7 business days
Product Style MD / Grey/Black/Red RevZilla Item #10150834 Store Sku416219 MFR. Product #0818-013 AvailabilityAvailable: Ships in 5-7 business days
Product Style LG / Grey/Black/Red RevZilla Item #10150835 Store Sku416220 MFR. Product #0818-014 AvailabilityAvailable: Ships in 5-7 business days
Product Style XL / Grey/Black/Red RevZilla Item #10150836 Store Sku416221 MFR. Product #0818-015 AvailabilityAvailable: Ships in 5-7 business days
Product Style 2XL / Grey/Black/Red RevZilla Item #10150837 Store Sku416222 MFR. Product #0818-016 AvailabilityAvailable: Ships in 5-7 business days

O'Neal Helmet Sizing

Helmet Size Head Measurement (cm)
XS 53-54
SM 55-56
MD 57-58
LG 59-60
XL 61-62
2XL 63-64
3XL 65-66

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.


How to Measure

  • H Head
    Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.
Product Description
Part Numbers
Sizing & Fit
55 Customer Reviews
55 4.5/5
33 Questions & 29 Answers
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