O'Neal
O’NEAL Sierra Dual Sport Helmet – Adventure, Motocross & Off-Road Motorcycle Helmet
- 100% Carbon Fiber Shell
- MIPS® Brain Protection System
- Dual Density EPS Liner
- Quick Release Chin Strap
- DOT & ECE Certified
RACE TESTED
Professional grade equipment
FREE SHIPPING
Orders over $100
EASY RETURNS
30-day return policy
1 YEAR WARRANTY
Built to perform
The O’NEAL Sierra Helmet is built for riders who demand versatility, protection, and comfort on every adventure. Designed for dual-sport, enduro, street, and off-road riding, this helmet combines a lightweight ABS/polycarbonate shell with advanced ventilation to keep you cool during long days on the trail. The moisture-wicking interior liner is removable and washable, ensuring fresh comfort ride after ride. Equipped with both a clear visor and an integrated sun shield, the Sierra adapts to changing light and terrain, making it an essential choice for dirt bike riders, ADV explorers, and off-road enthusiasts alike. Engineered to meet DOT and ECE safety standards, it delivers confidence-inspiring performance for every terrain and condition.
About This Item
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Lightweight ABS/polycarbonate shell construction for durability and rider protection
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Integrated face shield plus internal sun visor for all-weather adaptability
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Advanced ventilation system with intake and exhaust ports for airflow
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Moisture-wicking, removable, and washable comfort liner
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Padded chin strap with Double-D safety lock for a secure fit
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Designed for dual-sport, motocross, enduro, ADV, and street riding
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Meets DOT FMVSS 218 and ECE 22.05 safety standards
Product Details
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Color: Black/Gray
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Brand: O’NEAL
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Vehicle Service Type: Off-Road Motorcycles, Adventure, Dual-Sport
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Item Weight: 2195 grams
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Material: Polycarbonate/ABS
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Department: Unisex-Adult
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UNSPSC Code: 46181700 (Face and head protection)
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Date First Available: [Add release date if known]
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Manufacturer: O’Neal
Product Specs
- Brand: O'Neal
- Product Type: Dirt Bike Helmet
- Shell: Carbon Fiber
- Safety: DOT & ECE Certified
- Liner: Dual Density EPS
- Protection: MIPS® Brain Protection System
- Strap: Quick Release Chin Strap
Shipping
Most in-stock items ship within 1–2 business days. Shipping times may vary based on product availability, carrier delays, and destination.
Warranty
This product is covered by the manufacturer warranty. Warranty coverage may vary by brand and product type. Keep your order confirmation for warranty support.
Our Riders Say It Best
Comfortable fit, solid construction, and exactly what I expected from a quality piece of riding gear.
Layout preview—not a verified customer review.