Troy Lee Designs A3 MIPS Helmet Review

Even the most skilled riders can hit the dirt when tackling aggressive trails, so a high-quality helmet is essential. That’s where the Troy Lee Designs A3 MIPS Helmet comes in. Designed for enduro and trail riders, the A3 blends premium protection, thoughtful comfort, and advanced ventilation into a stylish and rugged package. Whether you’re tackling technical singletrack or climbing under the sun, this helmet keeps your head cool, your eyes shielded, and your brain protected from impact. With a snug customizable fit and smart safety features like MIPS and extended coverage, the A3 MIPS delivers on performance for serious riders who don’t want to compromise.

Technical Specifications

• Construction: In-mold polycarbonate shell with EPS foam

• Safety Features: MIPS, extended temple and rear coverage

• Ventilation: Advanced vented shell and sweat-wicking foam

• Visor: Three-position adjustable visor with magnetic release

• Fit System: Rear-stabilizer system with dial adjustment

View at Backcountry View at evo

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Comfort and fit

The A3 MIPS impresses immediately with its comfort. Riders who previously found Troy Lee helmets a tight fit (like the older A1) are likely to be pleasantly surprised. The interior cradles the head naturally, and the adjustable rear stabilizer system allows you to move the cradle up or down for a more personalized fit. Combined with a BOA-style dial at the rear, dialing in a snug but pressure-free fit takes only seconds. One reviewer even mentioned they wished there was a notch between two settings, but the middle worked fine. The magnetic buckle is another comfort win — easy to secure with one hand, even with gloves.

Ventilation and airflow

This is where the A3 MIPS truly shines. With numerous vents and carefully designed airflow channels, the helmet breathes exceptionally well, even on tough climbs. For riders who overheat quickly, the A3 provides noticeable relief. The sweat-wicking foam positioned throughout the interior helps keep moisture under control while also reducing odor. It’s especially beneficial for long days on the trail when breathability can make or break a ride.

Safety and protection

Troy Lee Designs built the A3 with both everyday trail riders and more aggressive enduro athletes in mind. The rugged in-mold polycarbonate shell handles crashes with ease, and the EPS foam underneath absorbs and disperses impacts effectively. Additional coverage around the temples and base of the skull enhances protection without stepping into full-face territory. MIPS (Multi-directional Impact Protection System) adds another layer of safety by reducing rotational forces in angled impacts. It’s clear the A3 is designed with real-world trail crashes in mind.

Features and usability

One standout feature is the three-position adjustable visor. Not only does it block sun, debris, and overhanging brush, but it also breaks away cleanly during a crash to reduce impact. The visor uses magnets, making it easy to adjust on the fly yet stable enough to stay in place on rough descents. Sunglass storage is well-thought-out too; you can easily slide your shades into the front vent for quick stowing. While it doesn’t support audio systems, the helmet’s performance and features more than make up for it.

Style and sizing

Troy Lee Designs didn’t skimp on looks with the A3 MIPS. The helmet has a sleek, aggressive shape with a sharp design aesthetic that looks great on the trail. It pairs well with a variety of riding kits and sunglasses. The sizing is comparable to other premium brands like Smith and POC, making it easier to switch over without confusion. Most riders will find the fit true to size, with options that accommodate a range of head shapes.

Pros and Cons

Pros

• Excellent ventilation for warm rides
• MIPS and extended coverage for strong safety
• Comfortable fit with adjustable rear cradle
• Magnetic visor and buckle are user-friendly
• Stylish design with quality construction

Cons

• Slight gap between some fit system notches
• No audio compatibility
• Premium price point

Where to buy

The Troy Lee Designs A3 MIPS Helmet is widely available at major outdoor and cycling retailers. You can find it online at Backcountry.com and evo.com. These sites typically offer multiple color options and frequent discounts, especially during seasonal sales or gear events.

View at Backcountry View at evo

Final verdict

The Troy Lee Designs A3 MIPS is one of the best all-mountain helmets on the market today. It strikes an ideal balance between lightweight comfort and serious protection. Thoughtful features like an adjustable visor, sweat-wicking padding, and an easy-to-use magnetic buckle make it a joy to wear on long days. The fit system allows for plenty of customization, and the helmet’s airflow is top-tier. While the price may feel steep for some riders, the performance, safety, and style of the A3 more than justify the investment. For trail and enduro riders looking for dependable, breathable, and comfortable protection, the A3 MIPS is a standout choice.