Best MTB Helmets (2026): Tested on Colorado Trails
Affiliate disclosure: The Gear Stash uses affiliate links. If you buy through one, I may earn a small commission at no extra cost to you. I only write about gear I’d actually wear.
I’ve crashed in a lot of helmets. Not all of them did what they were supposed to. After years of trail riding in Colorado — everything from mellow flow trails to high-alpine tech where the consequences of a mistake are real — I’ve narrowed it down to the ones I’d actually put on my own head. These are those.
Quick comparison
| Helmet | Best for | Style | Rating |
|---|---|---|---|
| Troy Lee Designs A3 | Trail and all-mountain | Half shell | ⭐⭐⭐⭐⭐ |
| Smith Forefront 2 | Enduro and aggressive trail | Half shell | ⭐⭐⭐⭐⭐ |
| Giro Manifest Spherical | All-mountain, best MIPS value | Half shell | ⭐⭐⭐⭐ |
| Fox Proframe RS | Enduro and rowdy terrain | Full face convertible | ⭐⭐⭐⭐ |
| Bell Super Air R | Trail to enduro, convertible | Full face convertible | ⭐⭐⭐⭐ |
1. Troy Lee Designs A3
This is what I reach for on most trail days. The fit is genuinely dialed — the retention system doesn’t shift around on descents the way cheaper helmets do — and the ventilation is good enough that I forget I’m wearing it on long climbs, which is about the highest praise a helmet can get. MIPS is included at this price point, which used to not be the case.
It’s not cheap. But it’s the kind of helmet where you stop thinking about upgrading after you buy it, which is worth something.
2. Smith Forefront 2
More coverage at the back of your head than a standard trail helmet. If your rides regularly include exposed terrain, technical rock, or anything where a backwards fall would be bad, that extra coverage matters. The Koroyd liner combined with MIPS gives it better impact absorption than most helmets at this price. The ventilation is genuinely impressive for how much protection it offers.
It’s heavier than the TLD A3. You’ll notice that on hot climbs. Whether that trade-off is worth it depends entirely on how gnarly your riding gets.
3. Giro Manifest Spherical
Spherical MIPS at a price that doesn’t require a long conversation with your significant other. The Manifest is Giro’s best trail helmet and probably the smartest buy on this list if you want top-tier rotational impact protection without paying top-tier money. The fit system works well, the ventilation is fine — not exceptional, but fine. If someone asked me for a helmet recommendation without telling me their budget, this is where I’d start the conversation.
4. Fox Proframe RS
The lightest full-face convertible I’ve worn, and it’s not particularly close. The chin bar comes off in seconds without tools, which matters when you’ve got a long climb before the fun starts. The overall weight is close enough to a half shell that you don’t feel punished for wearing it. If you’re doing bike park laps, committed enduro runs, or riding terrain where full-face protection is the right call, the Proframe RS is the helmet that makes the least painful argument for it.
It’s expensive. That’s the honest version of the trade-off.
5. Bell Super Air R
If you want convertible full-face coverage without the Fox price tag, this is the answer. MIPS is included, the chin bar removes without tools, and it does what it’s supposed to do at a price point that’s easier to justify. It’s heavier than the Proframe RS and the fit system isn’t quite as refined. But if the Fox is out of budget, this isn’t a compromise — it’s a solid helmet that happens to cost less.
What actually matters when buying an MTB helmet
Get MIPS. Specifically Spherical MIPS if budget allows. Rotational force is what causes most brain injuries in cycling crashes, and standard foam doesn’t address it. MIPS does. This isn’t a marketing claim — it’s what the impact research consistently shows.
Half shell vs full face vs convertible. Half shell for trail and XC. Full face for bike park and DH. Convertible if you’re regularly doing both in the same ride. Don’t overthink it beyond that.
Fit matters more than brand. A helmet that moves around your head in a crash is a helmet that isn’t protecting you. If you can try before you buy, do it. If you’re buying online, check the return policy.
Ventilation on Colorado trails is not optional. The climbs here are long and the sun is direct at altitude. A poorly ventilated helmet turns a fun day into a miserable one fast.
My pick
For most trail riders: TLD A3. For riders who push into technical or exposed terrain: Smith Forefront 2. Best value: Giro Manifest Spherical. Getting into bike park or committing to rowdy enduro: Fox Proframe RS, no question.
Protect your head. Everything else is replaceable.
Affiliate disclosure: The Gear Stash uses affiliate links. If you buy through our links, I may earn a small commission at no extra cost to you. I only recommend gear I’ve actually used.
