--- product_id: 81772830 title: "Sierra Helmet, Flat Black XXL" brand: "o'neal" price: "110.66 OMR" currency: OMR in_stock: true reviews_count: 13 category: "O'neal" url: https://www.desertcart.com.om/products/81772830-sierra-helmet-flat-black-xxl store_origin: OM region: Oman --- # Air-channeled moisture-wicking liner Double-D safety lock chin strap ABS shell for impact resistance Sierra Helmet, Flat Black XXL **Brand:** o'neal **Price:** 110.66 OMR **Availability:** ✅ In Stock ## Summary > 🏍️ Ride Bold, Ride Protected — The Sierra Means Serious Safety ## Quick Answers - **What is this?** Sierra Helmet, Flat Black XXL by o'neal - **How much does it cost?** 110.66 OMR with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/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 & Dry:** Advanced moisture-wicking, removable liner with air channels for all-day comfort and freshness. - • **Rugged ABS Shell:** Durable protection engineered to absorb impact and keep you safe on every ride. - • **Secure Fit Confidence:** Padded chin strap with double-D safety lock ensures your helmet stays locked in place. - • **Certified Safety Standards:** Meets DOT and ECE 22.05 certifications—trusted protection for street, enduro, and adventure riders. - • **Seamless Shield Integration:** Built-in adjustable face shield for clear vision and effortless sun protection. ## Overview The O'Neal Sierra Helmet in Flat Black XXL combines a tough ABS shell with a moisture-wicking, removable comfort liner and an integrated adjustable face shield. Designed for street and off-road riders, it features a padded chin strap with a double-D safety lock and meets rigorous DOT and ECE 22.05 safety standards. Lightweight yet durable, this helmet offers reliable protection and comfort for the discerning motorcyclist. ## 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: Looks great once you get the right size - I had an issue with my first order because the size I picked didn’t fit me correctly, so I had to exchange it. Once I got the right size, though, I was really happy with it. The helmet looks great in person and the flat white finish gives it a really clean look. It feels solid, the interior padding is comfortable, and once properly fitted it sits securely without feeling awkward. Visibility is good and it doesn’t feel excessively heavy on my head. Definitely make sure you check the sizing carefully before ordering, but after getting the correct size, I have no complaints. It looks awesome and feels like a quality helmet. 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 - Helmet runs small so if in between sizes order larger size - 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 | #13,491 in Automotive ( See Top 100 in Automotive ) #52 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 | 4.5 out of 5 stars 2,683 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 | Polycarbonate (PC) | | Material Type | Polycarbonate (PC) | | Model Name | Sierra R Helmet | | Model Number | 0817-506 | | Number of Items | 1 | | Shape | Oval | | Shell Type | Hard | | Specification Met | 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 ### ⭐⭐⭐⭐⭐ Looks great once you get the right size *by R***Z on August 9, 2026* I had an issue with my first order because the size I picked didn’t fit me correctly, so I had to exchange it. Once I got the right size, though, I was really happy with it. The helmet looks great in person and the flat white finish gives it a really clean look. It feels solid, the interior padding is comfortable, and once properly fitted it sits securely without feeling awkward. Visibility is good and it doesn’t feel excessively heavy on my head. Definitely make sure you check the sizing carefully before ordering, but after getting the correct size, I have no complaints. It looks awesome and feels like a quality helmet. ### ⭐⭐⭐⭐⭐ 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. ### ⭐⭐⭐⭐⭐ Snug *by S***T on December 14, 2023* First motocross style helmet. My previous helmet years ago was a street bike full face. I sent the first one back because the padding made it way too tight. Ordered an XL and it is very snug also. I’m confident that my head would be protected in a crash. Difficult to get eye glasses on after putting on the helmet. The sunshade thing on top catches quite a bit of air when riding on the highway. I looked into removing it but it is part of the hinge for the shield. The inner tinted sun shield touches my big nose when I drop it down and isn’t dark enough to really help much. The venting seems to work well. Enough air moving to keep the shield from fogging but not enough to dry out my old eyes. The padding seals well around the neck. It has been very comfortable for the autumn riding I’ve been doing. Haven’t used it on any hot days yet. Overall I like this helmet. Good value for the money. Order big if you are between two sizes. ## Frequently Bought Together - O'Neal Sierra Helmet - Seibertron Unisex BMX MX ATV MTB Racing Mountain Bike Bicycle Cycling Off-Road/Dirt Bike Gloves Road Racing Motorcycle Motocross Sports Gloves Touch Recognition Full Finger Glove - O'NEAL Element Dirt Bike Boots --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.om/products/81772830-sierra-helmet-flat-black-xxl](https://www.desertcart.com.om/products/81772830-sierra-helmet-flat-black-xxl) --- *Product available on Desertcart Oman* *Store origin: OM* *Last updated: 2026-10-12*