The A3 rocks!
"The A3 is my favourite half shell helmet out there. I’ve tried a lot of other helmets, nothing looks and feels as good as the A3."
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Head of the class, A3 leaves nothing to chance by setting the modern standard in protection and fit as demanded by Troy Lee Designs' athletes. Equipped with Mips® protection, the co-molded EPP/EPS design features sixteen vents to optimize airflow making for a helmet that is so comfortable it practically disappears on your head.
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SKU:150267001
- Co-molded EPP and EPS
- Mips® B-Series Rotational Impact Brain Protection System
- Advanced layering 3-piece shell
- 3-Way Magnajust® visor
- Sweat Glide System - EVA wicking foam
- 2-piece Ionic® comfort liner
- 16 vents optimally tuned with the channeling of the helmet
- Premium 3D Fidlock® magnetic buckle system
- Composite smart shear screws
- 415G
- Certification - CPSC 1203, CE EN 1078, AS NZ 2063:2008.
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Custom Lettering - $150.00
Name here is shown digitally as an example. Your hand lettered helmet will be custom and look much cooler.
Helmet Lettering
Custom Lettering - $150.00
Please review your order carefully.
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Unfortunately we can't offer refunds on customer spelling errors. Please allow an additional 7-10 business days for your custom lettering to be processed. Please note, obscene and offensive language is not allowed.
Name here is shown digitally as an example. Your hand lettered helmet will be custom and look much cooler.
A3 leaves nothing to chance by setting the modern standard in protection and fit as demanded by Troy Lee Designs athletes. Equipped with Mips® protection, the co-molded EPP/EPS design features sixteen vents to optimize airflow making for a helmet that is so comfortable it practically disappears on your head.
The ultimate protection for your head.
Coming in at 315g, you won't notice it the weight, while keeping your head safe.
16 vents optimally tuned with the channeling of the helmet



A3 leaves nothing to chance by setting the modern standard in protection and fit as demanded by Troy Lee Designs athletes. Equipped with Mips® protection, the co-molded EPP/EPS design features sixteen vents to optimize airflow making for a helmet that is so comfortable it practically disappears on your head.
The ultimate protection for your head.
Coming in at 315g, you won't notice it the weight, while keeping your head safe.
16 vents optimally tuned with the channeling of the helmet



- Co-molded EPP and EPS
- Mips® B-Series Rotational Impact Brain Protection System
- Advanced layering 3-piece shell
- 3-Way Magnajust® visor
- Sweat Glide System - EVA wicking foam
- 2-piece Ionic® comfort liner
- 16 vents optimally tuned with the channeling of the helmet
- Premium 3D Fidlock® magnetic buckle system
- Composite smart shear screws
- 415G
- Certification - CPSC 1203, CE EN 1078, AS NZ 2063:2008.
Overall rating: 4.7826085 / 5 from 46 reviews.
The A3 Helmet Uno Black is highly regarded for its excellent fit and stylish appearance, providing both comfort and protection as expected from Troy Lee Designs' athletes.
Review topics: ["fit","straps","quality","helmet","looks","feel","protection","ventilation","trails","lid"].
"The A3 is my favourite half shell helmet out there. I’ve tried a lot of other helmets, nothing looks and feels as good as the A3."
— Pearce G. (5/5)
"Came broken with the visor cracked and not bolted in on one side and scratched a bit on the back"
— Jack (1/5)
"High Quality, great fit and comfort!"
— Katy M. (5/5)
"All ways wanted a TLD helmet from the times he was putting the fins on the MX helmets back in the day. The A3 is comfortable even with the MIPS system. Awsome venting for these hot days. Extends protection nice at the back of the head and the fidlock chin strap is wonderful. Lived up to the hype and stoked to have the experience. Still got my race fin also!"
— Sebastien S. (5/5)
"This helmet fits SO GOOD, super lightweight and comfy"
— daniel s. (5/5)
"I bought this helmet because I get occipital neuralgia when I wear certain hats or helmets. This one fits really well and is well padded. I use it mostly for gravel riding and it doesn’t move around on my head."
— Elizabeth S. (5/5)
"A great helmet that is an upgrade to the previous A2 model."
— Kyle R. (5/5)
"I have always bought Kask helmets for road and MTB. I wanted to try something new and I try fox mtb helmet and it didn’t quick fit my round head. I was skeptical at first with Troy Lee Design helmets as helmets can be hit or miss. I decided to give the A3 a try. I was really surprised on the fitting. I have to say after 18+ years of cycling and mtb this helmet fit like it was made for me. It is comfortable, light, well ventilated, and well made. I am glad I purchased this helmet. In fact I order a second one. If you have a round head you will not go wrong!"
— Juan H. (5/5)
"I hadn't needed to a new helmet for a long time so I really researched comparable helmets and I kept coming back to this one - I wanted something light and safe with a decently low profile (not a huge mushroom)This feels like a very well built and is padding is very comfortable...right out of box in my case, just had to adjust the chinstrap! I like that it also comes with a bag and some extras. So far, so good!"
— Joe G. (5/5)
"Most comfortable helmet I've ever used."
— Eric B. (5/5)
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