No matter the sport, you want your gear to be lightweight. When competing, you don't want to be weighed down or hampered by your protection. This is specifically true for mountain biking and BMX racing. Lightweight protection allows you to go faster and it doesn't inhibit your range of movement.
Nowhere on the body is it more uncomfortable to be weighed down than your head. When you have a helmet that is big and heavy, it just feels unnatural. Companies are sensitive to this and have worked to limit the weight of their full face bike helmets.
Here are some picks for the most lightweight full face helmets for mountain bike and BMX racing:
7IDP M1 Full Face Helmet
A pick because of not only its weight but its cost, the 7IDP M1 Full Face Helmet is lightweight at under two pounds (900g/1.98lbs).
It is also a value pick, being priced at under $100; it is one of the most affordable full face helmets that we offer at SportsProtective. Lightweight and low cost are two criteria that a lot of riders might favor.
The M1 does have some limitations. Its internal comfort liner is minimal and doesn't offer the amount padding that others do, and the M1 does not meet the ASTM-1952 Downhill mountain bike standard. It also doesn't include any slip-plane technology, such as MIPS, that is often desired by many riders.
Whether it is cost or lightweight you are after, the 7IDP M1 does give you a good option at under $100.
Bell Super 3R MIPS Full Face Helmet
One of the lightest full face bike helmets out there, the Bell Super 3R MIPS Full Face Helmet weighs in at an astonishing 784g (1.72lbs).
It is incredibly light, so much so, that when you put it on, it doesn't feel like you are wearing anything at all. That feeling continues as you ride, due to the open look, airflow is at a premium because of the over exposure of the head.
It has all the bells and whistles you could want, including MIPS technology and a removable chin bar so you can go from trail riding to downhill without much effort. The Super 3R is a versatility marvel and a helmet that many riders go with when choosing a full face helmet.
One issue that some buyers might run into, however, is that the Bell Super 3R doesn't meet the ASTM-1952 downhill standard. Others might feel it won't stand up to the constant rigors of downhill use.
For the price ($229.95), the Bell Super 3R has a lot to offer a buyer. It meets the need for a low weight, well-ventilated helmet and with MIPS you know you are getting incredible added safety measures for added protection.
Fox Proframe MIPS Full Face Helmet
A helmet that has gotten a ton of attention is the Fox Proframe MIPS Full Face Helmet, and it isn't hard to understand why. Its look is unique and goes out on a limb with a wide open chin bar that has rarely been seen before.
It's look has mountain bike and BMX riders talking, but its features are truly what make it stand out.
It is one of the lightest helmets offered by SportsProtective at 750g (1.65lbs) and along with its weight, it is one of the most ventilated as well with a crazy 24 large "big bore" ventilation ports.
Lightweight, well vented and it also has MIPS technology? How could you go wrong with the Proframe? Well, some riders may see the open look of the chin bar and feel it doesn't offer enough protection against branches or debris.
The Proframe is definitely a pick on a lot of lists, whether it's for weight, venting, MIPS but lastly, unlike the other two helmets that we have mentioned, it meets the ASTM-1952 downhill standard. It has so much to offer a buyer, and at under $250 it is easy to see why it is high on our list.
Kali Avatar X Full Face Helmet
The Kali Avatar X Full Face Helmet for mountain bike and BMX is another solid pick for anyone looking to minimize weight while riding.
Weighing in at 878g (1.84lbs), the Avatar is one of the lighter helmets you can buy in the higher price range of around $300.
It has a stronger outer shell than most, made of Kevlar, carbon fiber and fiberglass. It allows the Avatar to be lightweight without much open space like other helmets.
Kali's Composite Fusion Plus technology is also a benefit. An inner liner that works hard to mitigate impacts gives some added protection to riders during a crash. Kali's testing shows that this technology does offer a safer inner liner.
Ventilation isn't at a premium like the Proframe or Super 3R, but the Avatar does meet the ASTM downhill standard.