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Troy Lee DesignsA3 MIPS Helmet

Sale 25% Off$164.99 - $180.00

Item # TLDY0H8

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  • Uno Yellow, M/L ($164.99)
  • Uno Yellow, XL/XXL ($164.99)
  • Uno Yellow, XS/S ($164.99)
  • Camo Green, M/L ($176.00)
  • Camo Green, XL/XXL ($176.00)
  • Sram White/Red, M/L ($176.00)
  • Sram White/Red, XS/S ($176.00)
  • Uno Cyan Blue, M/L ($176.00)
  • Uno Cyan Blue, XL/XXL ($176.00)
  • Uno Cyan Blue, XS/S ($176.00)
  • Black, XS/S ($180.00)
  • Camo Gray/Red, M/L ($176.00)
  • Camo Gray/Red, XL/XXL ($176.00)
  • Camo Gray/Red, XS/S ($176.00)
  • Proto White, M/L ($176.00)
  • Proto White, XL/XXL ($176.00)
  • Proto White, XS/S ($176.00)
  • Uno Silver/Electro, M/L ($176.00)
  • Uno Silver/Electro, XL/XXL ($176.00)
  • Uno Silver/Electro, XS/S ($176.00)
  • Uno Black, M/L ($174.99)
  • Uno Black, XL/XXL ($174.99)
  • Uno Black, XS/S ($174.99)
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Item # TLDY0H8

Why We Like The A3 MIPS Helmet

Even if you know the twists and turns of the trail like the back of your hand, your noggin still deserves reliable protection against unexpected falls and impacts. To cover your cranium for those all-mountain adventures, throw on the Troy Lee Designs A3 MIPS Helmet. Its polycarbonate shell is designed to act as the initial barrier when charging trails, and underlying EPS foam absorbs impact through every fall. The A3 offers additional coverage along the temples and base of your head than its smaller sibling, the A2, but doesn't go overboard with chin bars that are better-suited for the bike park. MIPS technology repositions the helmet to soak up angled impacts, and a ventilated shell keeps you cool on hot summer rides. To protect your eyes from debris and glare, the A3 employs a three-position adjustable visor that our riders applaud for its ability to break cleanly from the helmet through a fall, reducing impact forces if you don't happen to stick the landing.
  • A ventilated all-mountain helmet for confident control in the saddle
  • Rugged in-mold construction absorbs blows and impacts
  • Ventilated shell boosts airflow as your ride heats up
  • Positioned foam wicks sweat to enhance comfort and fight odor
  • Additional coverage along the temples and base increases protection
  • Retention fit system dials in the perfect, customized fit
  • Adjustable visor shields against dirt, debris, and glare

Tech Specs
Shell Materialpolycarbonate
Impact FoamEPS
Audio Compatibleno
Ventilation16 vents
Fit Adjustmentrear-stabilizer fit system
CertificationsCPSC 16 CFR 1203, CE EN 1078, AS NZ 2063: 2020
Manufacturer Warranty1 year
Activityenduro, trail

Troy Lee Designs

A1, A2
Head Circumference

19 - 20.9in

(48 - 53cm)

19.8 - 21.4in

(50 - 54cm)

21.3 - 22in

(54 - 56cm)

22.4 - 23.2in

(57 - 59cm)

22.6 - 24.8in

(60 - 62cm)

Hat Size 6 - 6 5/8 6 1/4 - 6 3/4 6 3/4 - 7 7 1/8 - 7 3/8 7 1/2 - 7 7/8
Head Circumference

20.5 - 20.9in

(52 - 53cm)

21.3 - 21.7in

(54 - 55cm)

22 - 22.4in

(56 - 57cm)

22.8 - 23.2in

(58 - 59cm)

23.6 - 24.4in

(60 - 62cm)

24.8 - 25.6in

(63 - 65cm)

Hat Size 6 1/2 - 6 5/8 6 3/4 - 6 7/8 7 - 7 1/8 7 1/4 - 7 3/8 7 1/2 - 7 3/4 7 7/8 - 8 1/8
 XS / SM / LXL / XXL
Head Circumference

21.3 - 22in

(54 - 56cm)

22.4 - 23.2in

(57 - 59cm)

22.6 - 24.8in

(60 - 62cm)

Hat Size 6 3/4 - 7 7 1/8 - 7 3/8 7 1/2 - 7 7/8
How to Measure:
With a tape measure, measure the widest point of your head, approximately 1 inch above your eyebrows.

What do you think about this product?


>Rating: 5

Decent helmet, exceeds expectations

I've put it through the wringer
True to size
Size Bought

My first TLD helmet, coming from Giro and Bell helmets I've been using for the last decade. I am pleasantly surprised how comfortable this helmet is. It feels like the helmet is wrapped around the head. I really appreciate how design of this helmet addresses little things, like magnetic buckle (super convenient) or piece of foam over the eyes area to keep sweat away. I do, however, have mixed feelings about that fin on the back of the helmet. What's the point of that thing? Does it even have a purpose? Looks like a weird little fantasy of a designer who spent all night watching "Star Trek". Overall, absolutely awesome product.

>Rating: 5

Insanely good quality!

I've used it several times
True to size
Size Bought

I purchased this helmet to replace my Giro Manifest Spherical helmet. Really good quality overall. The extra padding included is a nice value-added benefit that I haven't seen with other helmet manufacturers. I was on the max size for a small so I when a size up to M/L. There's definitely a size gap between XS/S and M/L but there's a lot of adjustments you can make that help get a proper fit like the extra thicker padding. I've only had it a couple of months but so far I'm happy with this one.

>Rating: 5

Love at First Ride

I've used it once or twice and have initial impressions
True to size
Size Bought

Initial impressions of course, but after one ride in the A3 MIPS helmet, I'm a big fan. I once tried on a TLD A1 and instantly was uncomfortable, so I had my hesitations trying out the A3 MIPS helmet. Pulled it out of the box, threw it on, and was blown away at how comfortable it is and how well it fits my head. The adjustable boa system and ability to move the rear stabilizer fit system (the plastic that cradles the back of your head) up and down allows you to find that perfect fit. I personally wish it were halfway between the lowest two notches, but the middle does just fine. The ventilation is next level as well. The lightweight helmet breathes incredibly well on the way up, and for someone that overheats easily, that is clutch. The adjustable visor uses magnets, so it's easy to adjust, but stays in place even on rowdy sections of trail. Troy Lee Designs absolutely crushed it with the A3 MIPS helmet. A stylish, yet incredibly functional design leaves you looking great while being protected. Oh and the magnetic buckle is easy to do and undo with one hand, yet stays locked on the ride with zero concern. Sizing is on par with Smith and POC helmets as well. Easy to slide your sunglasses into the front of the helmet for storage as well.