"Came broken with the visor cracked and not bolted in on one side and scratched a bit on the back"
A3 Helmet Uno Black
A3 Helmet Uno Black
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
Specifications
Specifications
- 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.
Shipping & Returns
Shipping & Returns
FREE Shipping on all orders over $99. For full details, visit our Shipping & Returns Page.

Helmet Lettering
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.
- Text
-
Font
Block
Script
-
Color
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.
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.
- Mips® B-Series Rotational Impact Brain Protection System
The ultimate protection for your head.
- lightweight
Coming in at 315g, you won't notice it the weight, while keeping your head safe.
- Optimum Ventilation
16 vents optimally tuned with the channeling of the helmet



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.
- Mips® B-Series Rotational Impact Brain Protection System
The ultimate protection for your head.
- lightweight
Coming in at 315g, you won't notice it the weight, while keeping your head safe.
- Optimum Ventilation
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: 4.7777777 / 5 from 45 reviews.
AI Generated Review Summary
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.
Summary topics
- Fit: 36%
- Appearance: 21%
Review topics: ["fit","straps","looks","helmet","quality","feel","protection","lid","trails","ventilation"].
Review highlights
- "Great coverage, great fit, great look." — J. W.
- "High Quality, great fit and comfort!" — Katy M.
- "Looks great and fits perfect" — Sheridan D.
Reviews
High Quality, great fit and
"High Quality, great fit and comfort!"
— Katy M. (5/5)
Lived up to the hype
"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)
Just buy it
"This helmet fits SO GOOD, super lightweight and comfy"
— daniel s. (5/5)
Super comfy
"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
"A great helmet that is an upgrade to the previous A2 model."
— Kyle R. (5/5)
I have always bought Kask
"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)
Diggin' it!
"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)
Comfortable
"Most comfortable helmet I've ever used."
— Eric B. (5/5)
Great fit right out of
"Great fit right out of the box. Looks clean, no nonsense, and sadly just looks faster than me sitting there. I am replacing last years “other high end brand” helmet and decided on TLD as I use TLD Speed elbows for everyday trail riding and have not had a complaint on their protective equipment. While I am not wanting to test A3s protective capabilities, I am positive they will help ward off a seventh concussion."
— Nikolai J. (5/5)
Q&A
- I were a large in all Mtb helmets Oakley and Fox so my concern is a m/l is somewhere in the middle which will cause uncomfortable fit, can you confirm either comparison to other helmets or diameter
- Hello, Please see the fit guide for our helmet on our website linked below. https://troyleedesigns.com/pages/fit-guide