What are the key features of the O'Neal Sierra Helmet?

The O'Neal Sierra Helmet boasts a robust design with features like a lightweight shell for enhanced mobility, a comfortable and breathable interior lining, and a secure retention system. Its advanced ventilation ensures proper airflow, making it ideal for long rides. The sleek, modern design not only looks great but also ensures superior protection during off-road adventures. Often recommended for both motocross and mountain biking enthusiasts, it balances safety and comfort, giving you the confidence to tackle any terrain.

How does the O'Neal Sierra Helmet compare to other helmets on the market?

The O'Neal Sierra Helmet is designed with a focus on both safety and comfort, standing out from many helmets in its price range. It uses high-quality materials, ensuring durability and longevity. Compared to competitors, its lightweight construction enhances wearability, while its ventilation system promotes comfort during lengthy rides. Riders often appreciate the blend of style and functionality, making it suitable for various riding disciplines, whether you’re on a motocross track or exploring rugged trails.

What sizes are available for the O'Neal Sierra Helmet?

The O'Neal Sierra Helmet is available in multiple sizes, ranging from small to extra-large, ensuring a perfect fit for various head sizes. To find your ideal size, measuring your head circumference and comparing it to the size chart provided by the manufacturer is recommended. A proper fit is crucial for optimal protection and comfort, helping to reduce movement during rides while providing a secure feel. Riders often emphasize that a comfortable and well-fitted helmet greatly enhances their riding experience.

Can I wear glasses or goggles with the O'Neal Sierra Helmet?

Yes, the O'Neal Sierra Helmet is designed to accommodate both glasses and goggles. It features a spacious interior that allows for easy fitting of eyewear, ensuring comfort during rides. Many riders prefer wearing goggles for enhanced visibility and protection from debris, while those needing prescription glasses find the helmet allows for a snug fit. This versatility makes it an excellent choice for riders who value eye protection while enjoying their outdoor adventures.

Is the O'Neal Sierra Helmet suitable for all-weather conditions?

The O'Neal Sierra Helmet is designed with all-weather riding in mind. Its ventilation system allows for airflow, reducing moisture buildup during warmer rides while maintaining comfort in cooler conditions. The helmet's materials are also moisture-wicking, which helps keep the interior dry. Riders often report that this makes it a reliable choice for various climates, whether you’re navigating muddy trails or hot summer days, ensuring that you stay comfortable no matter the weather.

How do I clean and maintain the O'Neal Sierra Helmet?

Cleaning the O'Neal Sierra Helmet is straightforward. It’s recommended to use a mild soap and water solution to wipe down the helmet’s outer shell and visor, ensuring to avoid harsh chemicals that can degrade the materials. The inner lining can typically be removed for washing, making it easy to keep it fresh and odor-free. Regular maintenance helps ensure longevity and performance, as riders often emphasize the importance of maintaining gear for optimal safety on every ride.

What certifications does the O'Neal Sierra Helmet meet?

The O'Neal Sierra Helmet meets various safety certifications, ensuring it provides adequate protection during rides. These certifications often include DOT (Department of Transportation) and ECE (Economic Commission for Europe) standards, which are essential for ensuring that the helmet has undergone rigorous testing. This verification gives riders peace of mind, knowing that they are using a helmet that adheres to stringent safety requirements. It's recommended for anyone serious about their safety while enjoying their favorite biking activities.

Is the O'Neal Sierra Helmet comfortable for long rides?

Absolutely! The O'Neal Sierra Helmet is designed for comfort, featuring a lightweight construction and ample padding that enhances wearability during lengthy rides. Its breathable interior lining helps wick moisture away, keeping you cool and dry. Riders often comment on how comfortable the helmet feels even after hours of use, enhancing overall riding pleasure. It's particularly beneficial for off-road enthusiasts or those who often participate in long-distance motorcycle tours.

What colors and designs are available for the O'Neal Sierra Helmet?

The O'Neal Sierra Helmet comes in a range of vibrant colors and eye-catching designs to suit various personal styles. Options typically include classic solid colors as well as bold graphics, allowing riders to choose one that reflects their individuality. This variety not only makes it fun for riders to express themselves but also adds an aesthetic appeal when matched with different riding gear. Whether you're into bold designs or prefer a subtle look, there’s likely a Sierra Helmet to match your taste.

Where can I buy O'Neal Sierra Helmet in Ireland?

You can buy the O'Neal Sierra Helmet through Ubuy in Ireland. Ubuy offers a variety of styles and sizes, making it easy to find the perfect fit for your riding needs. Their platform is user-friendly, allowing you to view detailed product descriptions and customer reviews. Ubuy is known for its reliable service, ensuring that you get your gear conveniently and efficiently, helping you to enjoy your rides with the best safety equipment available.

How to Shop O'Neal Sierra Helmet, Flat Black XXL Online From Ubuy?

It’s easy to shop O'Neal Sierra Helmet, Flat Black XXL online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location.

Is O'Neal Sierra Helmet, Flat Black XXL Available to Shop Online in Ireland?

Yes, at Ubuy Ireland this product is available for you to shop at a reasonable price. The O'Neal Sierra Helmet, Flat Black XXL is not available locally but you can trust us with our express shipping services.

How Long Does It Take to Get Product After Placing the Order?

The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.

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O'NEAL

Item #: 70626642

O'Neal Sierra Helmet, Flat Black XXL

90% of respondents would recommend this to a friend

Item #: 70626642

€ 187

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

^{*All items will import from US}

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Imported from USA store

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What Stands Out

Advanced Safety

The O'Neal Sierra Helmet features a reinforced shell design to enhance protection, ensuring riders can enjoy their adventures with confidence and security against impacts on tough terrains.

Comfort Fit System

Equipped with a customizable fit system, this helmet provides superior comfort and stability, allowing riders to maintain focus on their journey without compromising on convenience during extended wear.

Ventilation Design

Featuring strategically placed ventilation ports, the helmet promotes airflow, keeping riders cool and dry while tackling challenging trails, which enhances overall performance and comfort during rigorous activities.

Product Details

ABS shell construction
Weighs 1590G (+/- 50G)
Removable and washable air channeled comfort liner with moisture-wicking
Integrated face shield
Meets DOT and ECE 22-05 safety standards

Brand Name	O'NEAL
Global Trade Identification Number	04046068488011
Manufacturer	O'Neal
Model Name	Sierra R Helmet
Included Components	helmet
Item Type Name	Sierra Helmet R
Model Number	0817-506
Number of Items	1
Manufacturer Part Number	0817-506
Unit Count	1 Count
Compatible with Vehicle Type	ATV, PWC, off-road-motorcycles, street-cruiser-motorcycles, street-touring-motorcycles
Sport Type	Motorcycling
Material Type	Acrylonitrile Butadiene Styrene (ABS)
Finish Type	Glossy
Shell Type	Hard
Item Weight	3.5 pounds (1.59 kg)
Certificate Type	DOT
Specification Met	DOT FMVSS 218
Color	Flat Black
Shape	Oval
Style Name	Full-face-helmet-style
Brand	O'NEAL
Vehicle Service Type	ATV, PWC, off-road-motorcycles, street-cruiser-motorcycles, street-touring-motorcycles
Material	Acrylonitrile Butadiene Styrene (ABS)
Country of Origin	This item will be imported from US
Date First Available	April 07, 2021

Who Should Buy?

Off-Road Riders
Ideal for off-road enthusiasts who need durable protection during varied terrain and challenging weather conditions.
Budget-Conscious Buyers
A great choice for riders looking for quality safety gear without breaking the bank.
Beginner Cyclists
Perfect for novice riders needing reliable head protection while gaining confidence on their bike.

Professional Racers
May lack the advanced features and performance specifications required for professional competitive racing.

Product Description

O'Neal Sierra Helmet, Flat Black XXL

About This Item

Introducing the ONeal Unisex-Adult Full-face Style Sierra II Helmet in Flat White. This helmet is designed to provide the utmost comfort, quality, and protection for your motorcycle and cycling adventures. Constructed with a durable ABS shell, this helmet is built to withstand the rigors of the road while ensuring your safety.

Weighing only 1590g (50g), it offers a lightweight feel without compromising on protection. The moisture-wicking, removable, and washable air-channelling comfort liner keeps you cool and dry, even during intense rides. The vent holes on this helmet provide optimal airflow, allowing for proper ventilation and breathability.

Equipped with an integrated face shield and a height adjustable helmet shield, this helmet offers added versatility and convenience. The padded chin strap includes a Double-D safety lock, ensuring a secure fit at all times. You can trust the ONeal Sierra II Helmet to meet the DOT and ECE 22.05 safety standards, giving you peace of mind while you ride.

Whether you're hitting the street, going off-road on an Enduro or Side by Side, or embarking on an adventure bike journey, this helmet is designed to meet your specific needs. We also offer replacement parts for this helmet, ensuring that you can easily maintain and personalize your gear. Choose the ONeal Sierra II Helmet for the ultimate combination of style, comfort, and protection on every ride.

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Product Buying Guide

The O'Neal Sierra Helmet is an exceptional choice for riders seeking a comfortable and safe riding experience. With its durable construction and advanced features, this helmet is designed to meet the safety standards and provide unparalleled comfort. Continue Reading

Customer Questions & Answers

Question: How to Shop O'Neal Sierra Helmet, Flat Black XXL Online From Ubuy?

Answer: It’s easy to shop O'Neal Sierra Helmet, Flat Black XXL online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location.
Question: Is O'Neal Sierra Helmet, Flat Black XXL Available to Shop Online in Ireland?

Answer: Yes, at Ubuy Ireland this product is available for you to shop at a reasonable price. The O'Neal Sierra Helmet, Flat Black XXL is not available locally but you can trust us with our express shipping services.
Question: How Long Does It Take to Get Product After Placing the Order?

Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.

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Last Updated on September 3, 2026

Product Price History

Important information

Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

€ 187

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Features & Benefits

Produces motorcycle and cycle gear, parts, apparel and accessoriesfor comfort, quality, and protection
Constructed with ABS shell for safety
Moisture-wicking air-channelled comfort liner
Optimal ventilation with vent holes
Integrated face shield and height-adjustable helmet shield
Meets DOT and ECE 22.05 safety standards

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O'Neal Sierra Helmet, Flat Black XXL