O'Neal - Sierra II Flat Helmet
SKU: 19486498227

O'Neal - Sierra II Flat Helmet

Sale price$145.79 Regular price$161.99
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours Β· Estimated delivery Jul 8 - Jul 13

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Description

O'Neal - Sierra II Flat HelmetO'Neal Sierra II Flat Helmet The O'Neal Sierra II Flat Helmet feels like that dependable lid you grab every weekend, light, well vented, and ready for whatever track or trail you throw at it. Balanced shell weight, efficient venting, and a plush liner that keeps its shape moto after moto. Why We Like It: Everything about it feels dialed: airflow, comfort, and control without unnecessary extras. Why Itll Work for You: If you want straightforward

O'Neal - Sierra II Flat Helmet

The O'Neal Sierra II Flat Helmet feels like that dependable lid you grab every weekend, light, well-vented, and ready for whatever track or trail you throw at it.

Balanced shell weight, efficient venting, and a plush liner that keeps its shape moto after moto.

Why We Like It:
Everything about it feels dialed: airflow, comfort, and control without unnecessary extras.

Why It’ll Work for You:
If you want straightforward performance, easy goggle fit, and comfort that holds up, this helmet just works.

Variants / Options:
Available in several colorways and sizes for a dialed-in fit.

Key Features:

  • Lightweight, balanced shell design

  • Airflow channels for active cooling

  • Moisture-wicking comfort liner

  • Wide goggle port and adjustable peak

  • Shell in constructed with ABS

  • Weight: 1590g (Β± 50g)

  • 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 Bike’s

  • Replacement parts available


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 19486498227

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4.7 β˜…β˜…β˜…β˜…β˜…
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A
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Art Colucci
Bozeman, US
β˜…β˜…β˜…β˜…β˜… 4
Dress look, without paying, big dollars!
Size: XX-Large, Color: Khaki
Well worth the $. With a sweater, perfectly fine for winter wear. Without a sweater? Perfect for fall Nice look You’ll need to have it ironed, in that it comes in a very small plastic. Minor ironing! A good buy!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
L
Verified Purchase
Lizzie
Waukegan, US
β˜…β˜…β˜…β˜…β˜… 5
Very nice jacket/coat for the price
Size: X-Large, Color: Black
This was purchased to wear with a tuxedo for northern winter wear. The size XL is what he normally wears. It fit well over a tux shirt, vest and jacket. The length is perfect for a man; it covers the tux but does not get tangled in knees. It is lined in a satiny fabric. The wool type material is a bit rough, not soft, but it does the job. The black is rich looking and provides warmth for really cold weather. This jacket can easily be worn for casual wear. Should only be dry cleaned, but doubt it will ever really need to be cleaned.
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Reviewed in the United States on November 25, 2025
B
Verified Purchase
Brian
Omaha, US
β˜…β˜…β˜…β˜…β˜… 5
Cool
Size: XX-Large, Color: Black
Warm, long, goes almost to ny ankles and i am tall
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
R
Verified Purchase
Ribbles
Cuba, US
β˜…β˜…β˜…β˜…β˜… 1
Actually violet color and looks nothing like picture
Size: Large, Color: Red
Bait-n-switch. What arrives looks nothing like the photo. Its purple/pink and a misshapen ladies coat. Really low quality. And why they make them 90% polyester is crazy - just waiting to explode in flames!
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Reviewed in the United States on December 15, 2025
E
Verified Purchase
eMan
Los Angeles, US
β˜…β˜…β˜…β˜…β˜… 5
Better than expected
Size: Large, Color: Black
Nice weight and kept me warm in 20 degree weather. I recommend adding a scarf for your neck line but this coat gives a nice clean but dramatic look.
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Reviewed in the United States on February 2, 2026

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