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Troy Lee DesignsA1 Helmet Drone


Item # TLD016B

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Item # TLD016B

Alpha uno.

Covering your cranium is step one in any all-mountain adventure, and the Troy Lee A1 Drone Helmet offers you just the protection you want before saddling up. Like it's big brother, the A1 MIPS, the A1 Drone uses 16 vents to keep you cool on the ride and features the removable Coolmax liner to aid in moisture wicking and comfort while fighting odor-causing bacteria. It also features the same in-mold polycarbonate shell with EPS impact foam, but skips the MIPS technology sitting between your head and the helmet, which allows Troy Lee Designs to lower the cost to a more budget-conscious range.

The A1 Drone is built with an extended shell in the back, which is ideal for trail and enduro riding, as it provides extended protection from big hits. In the event of an accident, this lower design can protect your temporal and occipital lobes. This makes the helmet ideal for those looking for more coverage than many open-faced helmets, without springing for a full-face. It features an adjustable visor for shielding your eyes on bright days, and two different systems for dialing in the fit. The rear retention system is adjustable in three positions for those with different shapes of heads, and the back ratchet system fine-tunes the security of the helmet without excess movement or slop.

  • Trail-ready helmet for blasting berms without fear
  • Durable in-mold construction soaks up harsh blows
  • Large front and rear vents promote cooling airflow
  • Coolmax liner wicks away sweat and fights odor
  • Retention system dials in a comfy, customized fit
  • Adjustable visor shields you from glaring sun and unwieldy branches

California Proposition 65


This product can expose you to chemicals including Bisphenol A (BPA), which is known to the State of California to cause cancer. For more information go to

Tech Specs
Shell Materialin-mold polycarbonate
Impact FoamEPS foam
Ventilation16 vents
Fit Adjustment3-position stabilizer basket
Manufacturer Warranty3 year

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: 4

Ratchet broke in less than a month.

I've used it several times

The ratchet on one side will not tighten anymore unless it's off my head. Even then, I can just tug on that ratchet side strap and it just slides out. Would not protect very well in a crash. edit 01/22/2020 I contacted Troy Lee directly and they offered to ship me a new ratchet system free of charge. Other than what has happened, the helmet is great.

>Rating: 3

Decent helmet

I returned this product before using it

Out of the box the helmet looks very nice, well built, and the graphics are nice looking. The helmet also comes with a vented bag for traveling, which is a nice touch. Pros: *Well built. *Good rear coverage. *Fits nicely, without pressure points or moving around the head. *Padding is comfortable and high quality. Cons: *It looks gigantic in the head. Feels too round and too high. *The visor is weird looking (for my taste) and while it adjusts, it does not allow for goggle placement. *Could use an extra vent on each side. *The padding, while high quality, comes loose easily. *The straps are somewhat cumbersome to adjust for a high price helmet. *Expensive (even without MIPS). Due to the more cons than pros, I decided to return it. I did not get to ride with it. Based on how it felt on the head at home, I believe it would have performed well on the trail. Maybe just a bit hot.

>Rating: 5

Awesome lid!

I've put it through the wringer
True to size

After burning through helmets and earning my beloved nickname of "face brakes" I ended up in this one because of the sale price. As soon as I put it on, I was in love! For not being full of vent's it still breaths great! It's light, crazy comfortable and looks great! Also it woks with goggles! I've worn it in all temperatures, from spring desert riding, hot summer alpine riding, and late fall and even winter riding and it's always been the right temperature. I have a pretty big head (7 7/8) hat size and it slightly elongated from back to front so other brands like Giro don't work that well for me. This one does though! It has great coverage all around, especially on the lower section in the back. Honestly, my one and only complaint I have is that the vents in the front are too far apart to stow your glasses in them, but that XC stuff anyway. Another thing is that there is no center vents so my helmet mount light doesn't work great. Along the same line, if you use a Osprey pack that has the helmet carry feature, it doesn't work great for that. After owning it for 2 years, I finally replaced it with another A1 but with the MIPS.

>Rating: 4

Sweet Helmet

I've put it through the wringer

I've used the A1 helmet for years now, and got a new one this year to replace mine that had endured a few crashes just to be safe. Ok and maybe to get one of the sweet new colors :). This helmet is super comfy (subjective of course, but try it for yourself!), and I like that it has a relatively slim/low profile look to it yet also has very good coverage for safety. Only drawback that costs them a star is that the way the fit over your temples is so snug (probably a very good safety feature) that some sunglass frames do not cooperate very well with them. I use Smith Pivlocks, and they work fine as long as I have the glasses rest on the outside of the helmet's plastic retention system thingy that goes around the back of your head. This is something that bugged me a lot at first when trying things on, but I've ridden many miles with it and while on the trail everything works and feels fine.