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🏍️ Gear up with O'Neal Sierra – where protection meets performance in sleek flat black!
The O'Neal Sierra Helmet in Flat Black combines a durable ABS shell with lightweight design (1590g) and advanced ventilation (12 vents) to deliver top-tier protection and comfort. Featuring a moisture-wicking, removable liner, integrated adjustable face shield, and secure double-D chin strap, it meets DOT and ECE 22.05 safety standards, making it ideal for street, enduro, and adventure riders seeking reliable, stylish head protection.







| ASIN | B01K9GN6C8 |
| Best Sellers Rank | #11,072 in Automotive ( See Top 100 in Automotive ) #49 in Motorcycle & Powersports Helmets |
| Brand | O'NEAL |
| Brand Name | O'NEAL |
| Closure Type | Hook & Loop |
| Color | Flat Black |
| Compatible with Vehicle Type | ATV, PWC, off-road-motorcycles, street-cruiser-motorcycles, street-touring-motorcycles |
| Customer Reviews | 4.6 out of 5 stars 2,676 Reviews |
| Finish Type | Glossy |
| Global Trade Identification Number | 04046068487991 |
| Included Components | helmet |
| Item Type Name | Sierra Helmet R |
| Item Weight | 3.5 Pounds |
| Manufacturer | O'Neal |
| Manufacturer Part Number | 0817-504 |
| Material | Polycarbonate (PC) |
| Material Type | Polycarbonate (PC) |
| Model Name | Sierra R Helmet |
| Model Number | 0817-504 |
| Number Of Vents | 12 |
| Number of Items | 1 |
| Shape | Aerodynamic |
| Shell Type | Hard |
| Specification Met | DOT FMVSS 218 |
| Sport | Motorcycling |
| Sport Type | Motorcycling |
| Style Name | Full-face-helmet-style |
| Unit Count | 1.0 Count |
| Vehicle Service Type | ATV, PWC, off-road-motorcycles, street-cruiser-motorcycles, street-touring-motorcycles |
| Warranty Description | See Manufacturer |
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