After reading this article you’ll know what the best mountain bike helmets for hot weather are, to keep you cool while you’re giving it your all on the trail.
Personally, the number one irritation I have with mountain bike helmets is not that they’re running hot. I expect nothing less during a warm summer ride, where parts of a trail can tax your system, especially going uphill.
What I do find extremely frustrating is when you push back your lid on your head because your visor is impeding the view, and you accidentally empty a fully soaked liner sitting atop your brow. As a result not only do you get stinging sweat running into your eyes, but it also runs on the inside of your glasses.
That might be a little bit too graphical for you but I just want to make clear how much I appreciate a well-ventilated helmet. A helmet that might not prevent such a scenario from happening, but is designed in such a way that it drastically reduces the risk.
These mountain bike helmets for hot weather offer a number of ways to keep your focus on the trail, not having to stop to wipe your eyes. Huge intake vents to get cool air into and underneath the helmet’s interior, brow ventilation, sweat wicking padding, and an allround great fit without hot spots and pressure points.
You can find an overview of all the helmets and their features at the end of the article.
Bell Sixer MIPS
One tier below the Super Air sits the Bell Sixer MIPS.
In terms of value-for-money it’s significantly less expensive, while only sacrificing the full-face optional chin bar and Spherical technology.
It doesn’t mean this helmet is not expensive, it’s just that the Super Air is really expensive. But what you do get for that type of money is the same solid design and MIPS Evolve protection underneath a reinforced polycarbonate shell. This helmet also features the progressive EPS 3-part layering.
One of the things I especially like about this helmet is the 3-point adjustable visor. The ratcheting mechanism lets you easily click the visor in the right position. You can store your eyewear at the front or back.
For an open faced mountain bike helmet it’s really well ventilated. I don’t know exactly how this Dual-flow Ventilation system works, but it does, and that’s what matters.
The Float Fit system lets you adjust, tighten or loosen the fit with a dial, and includes 4 positions for vertical adjustment as well.
- Offers ample protection with very little compromise in a gorgeous design.
- None
Fox Racing Speedframe Pro
The Fox Racing Speedframe is the same helmet as the Pro version in everything but a small number of features.
The Speedframe Pro is one of the best helmets in terms of safety, and the standard Speedframe inherits many of its safety features except for the multi-density EPS liner.
The helmet is known for having an excellent fit, and you can fit a pair of goggles underneath the 3-point adjustable visor, as well as stash your glasses.
A good fit without pressure points, and a huge number strategically placed vents funneling air into and over your scalp keeps the heat buildup at bay. The air flow is especially noticeable when you pick up speed.
To keep the price down when compared to the Pro version, there’s a cheaper liner and the Fidlock snap buckle is missing from the straps, in an otherwise similar 360 degrees fit system.
It’s a great-looking mountain bike helmet, available in many colors and 3 sizes to choose from.
- One of the safest mountain bike helmets, in lots of different color variations.
- None
Troy Lee Designs A2
The Troy Lee Designs A2 is one of the most affordable, high quality, open-faced mountain bike helmets worth your money.
It offers superb comfort and fit, with an anti-bacterial X-Static Pure Silver padding. The padding sits within a dual-density EPS liner. The polycarbonate shell wraps around the edges to further protect the rather delicate EPS.
The decade-old design has been updated to feature the MIPS technology. Safety is further enhanced with the bolt-on breakaway visor, and 3-point fit system.
Part of the popularity of the A2 can be attributed to the comfort it provides. Both with the excellent fit and its ability to keep your head cool when you try and get the most out of your ride. 2 vents on the side extend far into the front. Together with elongated vents on top they suck in cool air, which can exit through a number of vents located at the back.
It’s a great looking helmet, available in many colors, with a perfect track record in crash protection, for a price below many of the top-of-the-line offerings from its competitors. An unbeatable proposition when it comes to mountain bike helmets.
- Best-in-class safety for a reasonable price when compared to the competition
- None
Troy Lee Designs A3
The Troy Lee Designs A3 is literally the bigger brother of the A2, offering more coverage in basically the same package.
The A2 is one of the best helmets on the market, so it’s no surprise the A3 scores just as well. and does so with a helmet that extends lower at the back of your head.
Offering MIPS technology dual-density EPS foam, and the overall excellent fit with an additional liner included in the package.
The antimicrobial resistant liner covers the entire inside of the helmet and provides an extremely comfortable experience that makes you forget you’re wearing it. Something the Troy Lee helmets are known for. A handy Fidlock buckle can be opened one handed wearing gloves.
The visor is 3-way adjustable. I actually prefer such a ratcheted system. And when pushed upwards it leaves more than enough room if you like wearing goggles.
The ventilation setup is different from the A2. I don’t know why they’ve done this, since there’s absolutely nothing wrong with the air flow of the A2. Luckily the amount of ventilation is just as good in keeping you cool.
As a flagship product it’s very expensive indeed, and might prove to be too big a jump with the A2 being just as good and much cheaper. But if you want extra coverage in a well-designed, good-looking Troy Lee helmet, this is the one.
- Bigger coverage version of the already fantastic A2 helmet
- Increase in price might be a bridge too far
POC Kortal Race MIPS
The POC Kortal Race MIPS is a trail and enduro open face mountain bike helmet offering above-average coverage and protection in a very premium package.
The Swedish company has made an exquisite-looking helmet with a Halo’s Master Chief blocky design. But rather than fighting the flood, you’ll be tackling the trail with one the most unique entries in the open face mountain bike helmet lineup.
With almost every helmet manufacturer choosing to integrate MIPS technology into their premium offerings, POC decided to ditch their otherwise excellent SPIN crash protection in favor of the newest MIPS Integra version. It means the MIPS system is customized for the specific helmet, which should improve its effectiveness in decreasing rotational impact damage.
Something they call an aramid bridge is part of the helmet, which sounded very much like the Kevlar breaker used in tires to make them more puncture resistant. Aramid, which is the non-brand name of Kevlar, is not meant to protect the tube in this case, but to protect your head. It’s not known for being inexpensive and neither is this helmet.
They also included a NFC medical ID, and Recco reflector. To me that means you’re either one of the most hardcore lone-wolf riders out there, or a tad too much. The stuff is usually reserved for people who’re being rescued unconsciously from underneath an avalanche.
Neatly placed dual slits in the front of the helmet keep your brow cool. This is the most important area to keep cool because much more than simply being a nuisance, sweat buildup can trickle over your glasses or into your eyes. Goggle straps don’t cover the ventilation holes and the helmet is designed in such a way that it does an excellent job of moving air into, over, and out the back of the helmet.
The 3-position adjustable visor sits quite high so you’ll have no trouble propping your glasses underneath them. On the other hand, when confronted with a low-sitting sun, you might still get blinded.
It’s a tad heavier because of the amount of coverage it provides, and fits snugly around your head with the 360 Fit system.
- Large coverage provides extreme levels of protection for trail and enduro riders.
- You pay the hefty price for tech you might not need
POC Tectal Race MIPS
The white/orange version of the POC Tectal Race MIPS has the honor of being my personal favorite bike helmet design-wise. But what’s more important than how I feel about design is whether or not it does the job it was designed for. And as with many POC products, it does.
Similar to its bigger brother, the Kortal Race, it offers the MIPS Integra version of this crash technology, aimed at the reduction of energy transfer caused by rotational forces during an impact.
It also features the aramid reinforcement attached to the EPS liner, otherwise known as Kevlar.
And where it ditches the NFC chip, it still has the Recco Reflector should you find yourself flying off the trail and ending somewhere in the ravine.
The ventilation is similar to that of the Kortal Race, with the exception of the dual slits, which are missing in this model. Yet, the helmet offers the same fantastic air flow into the helmet.
The helmet offers a snug fit, but it is still highly ventilated offering great air flow capability. It has a standard helmet weight of around 365 grams.
- Fantastic design, great protection, snug fit
- Snug fit
POC Tectal Race SPIN
The POC Tectal Race SPIN is a fantastic-looking half shell mountain bike helmet featuring the SPIN crash technology.
SPIN is POC’s proprietary crash technology and is an abbreviation of “Shearing Pad INside”. Its goal is the same as MIPS, with rotational forces being dissipated by using silicone bladders in the liner.
The SPIN technology in combination with the unibody EPS structure, and aramid puncture-resistant reinforcement makes for an excellent impact-resistant helmet.
I believe that because of its proprietary nature POC decided to ditch SPIN in favor of MIPS in their recent lineup, for what is probably a marketing and sales reason. Because SPIN proved to be an excellent approach to increase a rider’s safety with respect to the helmet.
It is what it is, and it does mean that excellent can probably be had for less than its initial suggested retail price of 230 euros.
- Just as good as the MIPS version and probably cheaper
- If you're serious about getting a MIPS helmet
Giro Manifest Spherical
The Giro Manifest Spherical offers the airiness of a road bike helmet in an open face mountain bike helmet package.
The general notion of this helmet is that Giro played around with the design of the helmet to ensure maximum air flow. With 19 air vents it seems to do the trick creating probably the best mountain bike helmet for hot summer rides.
In terms of protection it offers the same as the already very expensive Giro Merit Spherical, but tops it off with an added ring of polycarbonate called the Auro Arch, which serves as a kind of roll-cage for your head.
So it means you also get the MIPS Air technology, the Spherical ball-and-socket setup for the EPS liner, which has a dual-density characteristic.
The Manifest is not only one of the safest helmets on the market, it’s also one of the best-ventilated. A total of 19 huge vents in a relative low-weight package ensure maximum air flow and a reduced risk of heat building up. When you don’t do prolonged stretches of slow climbing the chances of the helmet feeling hot and uncomfortable is near zero.
Does that kind of tech win awards in the safety department? Yes it does. Does that kind of tech win awards in how fast it’ll drain your wallet? It does that equally impressive, being the most expensive helmet of its specific category.
- Jam-packed with award-winning crash technology to create the ultimate mountain bike helmet for hot summer trail riding.
- Extremely expensive
Specifications mountain bike helmets for hot weather
Name | Price | Technology | Shell | Liner | Visor | Fit | weight (gr) | eyewear port | rating | Buy at Amazon |
|---|---|---|---|---|---|---|---|---|---|---|
Bell Sixer MIPS | 170 USD | MIPS Evolve | polycarbonate | Progressive Layering 3-layer EPS | 4-position adjustable | Float Fit Race | 395 | 15.56 | ||
Fox Racing Speedframe Pro | 190 USD | MIPS | polycarbonate | dual density EPS | 3-position adjustable | 360° Fit System w. Fidlock buckle | 380 | yes | 10.84 | |
Troy Lee Designs A2 | 170 USD | MIPS | polycarbonate | dual density EPS | bolt-on breakaway | 3-point dial fit | 350 | yes | 9.99 | |
Troy Lee Designs A3 | 250 USD | MIPS | polycarbonate | dual density EPS | 3-position adjustable | 3-point dial fit w. Fidlock buckle | 411 | yes | 11.01 | |
POC Kortal Race MIPS | 250 EUR | MIPS Integra/Aramid bridge | polycarbonate | EPS | 3-position adjustable | adjustable 360-degree fit | 407 | yes | ||
POC Tectal Race MIPS | 230 EUR | MIPS Integra/Aramid bridge | polycarbonate | EPS | adjustable | adjustable 360-degree fit | 365 | yes | ||
POC Tectal Race SPIN | 230 EUR | SPIN/Aramid bridge/Unibody | polycarbonate | EPS | adjustable | 368 | 11.67 | |||
Giro Manifest Spherical | 260 USD | MIPS/Spherical/Hardbody/Aura Arch | polycarbonate | dual density EPS | bolt-on adjustable | Roc Loc 5 Trail w. Fidlock buckle | 340 | yes | 12.20 |
Johan van Seijen
FoundeR Restoration.bike
Johan van Seijen is the founder of restoration.bike. His passion for cycling in general, and restoring older bikes turned into a website to share his knowledge with a broader audience. Starting out on his father’s road bike and riding classics as the Amstel Gold Race and Liege Bastogne Liege he has shifted his attention to trail, XC, and gravel riding since. No matter how much he loves writing about everything related to cycling, nothing beats actually using his ever-expanding bicycle collection.
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