--- product_id: 452338642 title: "Sierra Helmet, Black/Gray MD" brand: "o'neal" price: "¥77398" currency: JPY in_stock: true reviews_count: 13 url: https://www.desertcart.jp/products/452338642-sierra-helmet-black-gray-md store_origin: JP region: Japan --- # Polycarbonate/ABS shell Ventilated with moisture-wicking liner DOT & ECE certified safety Sierra Helmet, Black/Gray MD **Brand:** o'neal **Price:** ¥77398 **Availability:** ✅ In Stock ## Summary > 🛡️ Ride Bold, Ride Protected — The Sierra Helmet Means Business ## Quick Answers - **What is this?** Sierra Helmet, Black/Gray MD by o'neal - **How much does it cost?** ¥77398 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/452338642-sierra-helmet-black-gray-md) ## 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 - • **Custom Comfort Fit:** Height adjustable shield and padded chin strap with Double-D safety lock for secure, personalized wear. - • **Stay Cool Under Pressure:** Integrated vent holes and removable, washable moisture-wicking liner ensure fresh airflow during intense rides. - • **Lightweight, Durable Shell:** Polycarbonate/ABS construction keeps the helmet sturdy yet featherlight at just 1590g ± 50g. - • **Race-Ready Safety Standards:** Meets rigorous DOT FMVSS 218 & ECE 22.05 certifications for ultimate protection on every ride. - • **Versatile Adventure Companion:** Designed for street, enduro, side-by-side, and adventure bikes—gear up for every terrain with confidence. ## Overview The O'Neal Sierra Helmet in Black/Gray combines advanced polycarbonate/ABS shell technology with certified DOT and ECE safety standards, delivering a lightweight (approx. 1590g) and ventilated design. Featuring an integrated, height-adjustable face shield and a padded chin strap with a Double-D safety lock, it offers customizable comfort and protection for street and off-road motorcycling adventures. ## Description In 1970, Jim O'Neal began attending his races with some spare tires and parts to sell to local riders. Jim’s first big product was Preston Petty fenders. “Those Fenders were hot. Off Road racing was just getting serious and everyone needed the better parts, apparel and accessories to compete. It was then that Jim O’Neal Distributing Inc. was born. Features: Polycarbonate/ABS Shell construction - 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 FMVSS 218 and ECE 22.05 safety standards - Designed for Street, Enduro, Side by Side and Adventure Bike’s ## Features - Polycarbonate/ABS Shell construction - Integrated face shield - Height adjustable helmet shield - Padded Chin Strap with Double-D safety lock - Meets DOT FMVSS 218 and ECE 22.05 safety standards ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B095WC8433 | | Best Sellers Rank | #15,431 in Automotive (See Top 100 in Automotive) #59 in Motorcycle & Powersports Helmets | | Brand Name | O'NEAL | | Certificate Type | DOT | | Color | Black/Gray | | Compatible With Vehicle Type | off-road-motorcycles | | Customer Reviews | 4.6 4.6 out of 5 stars (2,687) 4.6 out of 5 stars | | Included Components | Full Face Helmet | | Item Type Name | Sierra Helmet R | | Item Weight | 120 g | | Manufacturer | O'Neal | | Manufacturer Part Number | 0818-703 | | Material Type | Polycarbonate (PC) | | Model Name | Sierra R Helmet | | Model Number | 0818-703 | | Number Of Items | 1 | | Shape | Aerodynamic | | Shell Type | Hard | | Specification Met | DOT, ECE | | Sport Type | Motorcycling | | Style Name | Black/Gray | | Unit Count | 1 Count | | Warranty Description | See Manufacturer | ## Product Details - **Brand:** O'NEAL - **Color:** Black/Gray - **Item Weight:** 120 g - **Material:** Polycarbonate (PC) - **Vehicle Service Type:** off-road-motorcycles ## Images ![Sierra Helmet, Black/Gray MD - Image 1](https://m.media-amazon.com/images/I/71wycCami0L.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Looks great once you get the right size *by on Reviewed in the United States 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 on Reviewed in the United States 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#1As 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#2I recently noticed that the screws to the visor were very loose. Get some blue loctite on those before you lose them.Update#3After some time, the LG does cause unbearable crown pressure. It's mostly loose left to right.Update#4I 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 on Reviewed in the United States 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 - KEMIMOTO Tactical Gloves for Men, Touchscreen Motorcycle Gloves with Hard Shell & Palm Padding for Sports Motorcycle Cycling Tactical Airsoft Paintball Hunting Hiking Camping Climbing --- ## 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.jp/products/452338642-sierra-helmet-black-gray-md](https://www.desertcart.jp/products/452338642-sierra-helmet-black-gray-md) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-15*