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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
|Product Style||RevZilla Item #||MFR. Product #||Availability|
|Product Style Flat Black / XS||RevZilla Item #1223674||MFR. Product #0817-501||AvailabilityAvailable: Requires 1-2 business days of lead time prior to shipment|
|Product Style Flat Black / SM||RevZilla Item #1223675||MFR. Product #0817-502||AvailabilityIn Stock: Ships within 24 hours|
|Product Style Flat Black / MD||RevZilla Item #1223676||MFR. Product #0817-503||AvailabilityIn Stock: Ships within 24 hours|
|Product Style Flat Black / LG||RevZilla Item #1223677||MFR. Product #0817-504||AvailabilityOut of Stock|
|Product Style Flat Black / XL||RevZilla Item #1223678||MFR. Product #0817-505||AvailabilityIn Stock: Ships within 24 hours|
|Product Style Flat Black / 2XL||RevZilla Item #1223679||MFR. Product #0817-506||AvailabilityIn Stock: Ships within 24 hours|
|Product Style Flat White / XS||RevZilla Item #1223680||MFR. Product #0817-511||AvailabilityIn Stock: Ships within 24 hours|
|Product Style Flat White / SM||RevZilla Item #1223681||MFR. Product #0817-512||AvailabilityIn Stock: Ships within 24 hours|
|Product Style Flat White / MD||RevZilla Item #1223682||MFR. Product #0817-513||AvailabilityIn Stock: Ships within 24 hours|
|Product Style Flat White / LG||RevZilla Item #1223683||MFR. Product #0817-514||AvailabilityIn Stock: Ships within 24 hours|
|Product Style Flat White / XL||RevZilla Item #1223684||MFR. Product #0817-515||AvailabilityIn Stock: Ships within 24 hours|
|Product Style Flat White / 2XL||RevZilla Item #1223685||MFR. Product #0817-516||AvailabilityIn Stock: Ships within 24 hours|
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Shipping & Returns
Reviews & Questions
4 Customer Reviews
8 Questions & 5 Answers
Browse 10 questions Browse 10 questions and 6 answers
Does the face shield lock in completely? Based on the pictures, it looks like there is a gap and that it does not have a complete, air-tight seal.
BEST ANSWER: Yes, the face shield on the Sierra II Helmet locks into place for an air-tight seal.
how does this fair in terms of aerodynamics and wind resistance in freeway riding?
Does this helmet work with comms units like a sena?
Does dust get in your eyes through the bottom of the helmet?
Does dust come in through the bottom of the helmet and get in your eyes?
BEST ANSWER: No or not much become of the winter seal
Can you remove the face shield?