---
product_id: 81772830
title: "Sierra Helmet, Flat Black XXL"
brand: "o'neal"
price: "2435 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "O'neal"
url: https://www.desertcart.ro/products/81772830-sierra-helmet-flat-black-xxl
store_origin: RO
region: Romania
---

# Moisture-wicking, ventilated liner for cool rides Lightweight at 1590g for all-day comfort ABS Shell for durable impact resistance Sierra Helmet, Flat Black XXL

**Brand:** o'neal
**Price:** 2435 Lei
**Availability:** ✅ In Stock

## Summary

> 🛵 Ride Bold, Ride Protected — The Sierra Helmets Means Business

## Quick Answers

- **What is this?** Sierra Helmet, Flat Black XXL by o'neal
- **How much does it cost?** 2435 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/81772830-sierra-helmet-flat-black-xxl)

## Best For

- o'neal enthusiasts

## Why This Product

- Trusted o'neal brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Stay Cool Tech:** Removable, washable liner with air channels keeps you fresh
- • **Secure Fit Lock:** Padded chin strap with double-D safety lock for peace of mind
- • **Rugged ABS Shell:** Engineered for maximum protection without the bulk
- • **Featherlight Comfort:** At just 1590g, ride longer without fatigue
- • **Integrated Face Shield:** Seamless sun and wind protection with height adjustability

## Overview

The O'Neal Sierra Helmet in Flat Black XXL combines a tough ABS shell with a lightweight 1590g design, featuring a moisture-wicking, removable comfort liner and integrated adjustable face shield. Certified to DOT and ECE 22.05 standards, it offers reliable protection and ventilation for street, enduro, and adventure riders seeking premium features at an accessible price.

## Description

O'NEAL produces motorcycle and cycle gear, parts, apparel and accessories that absolutely offer the best in comfort, quality and protection every time you ride. Security, quality and protection you can trust after nearly 40 years of racing. Features: Shell IIS constructed with ABS - Weight: 1590g ( 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.

Review: Great entry level helmet - Really nice helmet at price point! It’s comfortable, stylish with many features found in more expensive models
Review: Yes, you need a sun visor - In my opinion, this helmet hit a home run. I've only had it for a few weeks but the quality seems to far surpass the value. I like the silver/gray color scheme a lot and I love the sun visor. I do wish it had more vents since I live in the heat but it's fine. There is some wind noise but I think that's the nature of the beast. Sometimes there are sacrifices for such a low price but I just don't see it in this particular item. Update#1 As an addition, I am a tweener at 23" - between MD and LG - so I went with the LG. I got it, I wore it around the house and it felt snug; however, after many rides later, it does seem to have broken in to an ever so slightly, loose fit. It's possible a MD would have been a better choice. Update#2 I recently noticed that the screws to the visor were very loose. Get some blue loctite on those before you lose them. Update#3 After some time, the LG does cause unbearable crown pressure. It's mostly loose left to right. Update#4 I bought a MED and confirmed the outer shell and inner padding of both LG and MED are identical in size. They share the same shell and the difference lies in the EPS core. Unfortunately, the MED mostly caused forehead pressure and wasn't the solution to the LG. This is unfortunate dilemma of a tweener.

## Features

- Shell is constructed with ABS
- Weight: 1590G ( 50G)
- Moisture wicking, removable/washable air channeled comfort liner
- Integrated face shield
- Padded chin strap with double-d safety lock

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01K9GN9Z2 |
| Best Sellers Rank | #13,209 in Automotive ( See Top 100 in Automotive ) #63 in Motorcycle & Powersports Helmets |
| Brand | O'NEAL |
| Brand Name | O'NEAL |
| Certificate Type | DOT |
| 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 2,679 Reviews |
| Finish Type | Glossy |
| Global Trade Identification Number | 04046068488011 |
| Included Components | helmet |
| Item Type Name | Sierra Helmet R |
| Item Weight | 3.5 pounds |
| Manufacturer | O'Neal |
| Manufacturer Part Number | 0817-506 |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Material Type | Acrylonitrile Butadiene Styrene (ABS) |
| Model Name | Sierra R Helmet |
| Model Number | 0817-506 |
| Number of Items | 1 |
| Shape | Oval |
| Shell Type | Hard |
| Specification Met | DOT FMVSS 218 |
| Sport | Motorcycling |
| Sport Type | Motorcycling |
| Style Name | Full-face-helmet-style |
| Unit Count | 1 Count |
| Vehicle Service Type | ATV, PWC, off-road-motorcycles, street-cruiser-motorcycles, street-touring-motorcycles |
| Warranty Description | See Manufacturer |

## Product Details

- **Brand:** O'NEAL
- **Color:** Flat Black
- **Item Weight:** 3.5 Pounds
- **Material:** Acrylonitrile Butadiene Styrene (ABS)
- **Vehicle Service Type:** ATV, PWC, off-road-motorcycles, street-cruiser-motorcycles, street-touring-motorcycles

## Images

![Sierra Helmet, Flat Black XXL - Image 1](https://m.media-amazon.com/images/I/817dW7TVNlL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great entry level helmet
*by S***R on June 4, 2026*

Really nice helmet at price point! It’s comfortable, stylish with many features found in more expensive models

### ⭐⭐⭐⭐⭐ Yes, you need a sun visor
*by M***P on October 8, 2025*

In my opinion, this helmet hit a home run. I've only had it for a few weeks but the quality seems to far surpass the value. I like the silver/gray color scheme a lot and I love the sun visor. I do wish it had more vents since I live in the heat but it's fine. There is some wind noise but I think that's the nature of the beast. Sometimes there are sacrifices for such a low price but I just don't see it in this particular item. Update#1 As an addition, I am a tweener at 23" - between MD and LG - so I went with the LG. I got it, I wore it around the house and it felt snug; however, after many rides later, it does seem to have broken in to an ever so slightly, loose fit. It's possible a MD would have been a better choice. Update#2 I recently noticed that the screws to the visor were very loose. Get some blue loctite on those before you lose them. Update#3 After some time, the LG does cause unbearable crown pressure. It's mostly loose left to right. Update#4 I bought a MED and confirmed the outer shell and inner padding of both LG and MED are identical in size. They share the same shell and the difference lies in the EPS core. Unfortunately, the MED mostly caused forehead pressure and wasn't the solution to the LG. This is unfortunate dilemma of a tweener.

### ⭐⭐⭐⭐⭐ For the price, one great dual sport riding helmet
*by J***N on November 26, 2025*

Great helmet for the price. O'Neal dud a great job with the engineering aspects. Very comfortable, well padded, full face coverage keeps the wind off your face, much quieter on windy rides, sun protection visor for sunny days. Face protector visor easily retractable. Liked mine so I ordered one for my wife as well

## Frequently Bought Together

- O'Neal Sierra Helmet
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- O'NEAL Element Dirt Bike Boots

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**Shop now:** [https://www.desertcart.ro/products/81772830-sierra-helmet-flat-black-xxl](https://www.desertcart.ro/products/81772830-sierra-helmet-flat-black-xxl)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-09-13*