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Troy Lee Designs
A1 Mips Helmet

4.333333333333333 out of 5 stars
9 Reviews
Current price: $58.00 Original price: $145.00
60% off


Size Chart


Why We Like The A1 MIPS Helmet

Building on Troy Lee Designs' heritage of hard-hitting gravity and motocross protection, the A1 MIPS Helmet provides bomber protection in a lightweight package to top off epic enduro runs and technical trail adventures. Featuring the same extended protection at the back of the head and around the temples as the standard A1, the A1 MIPS steps the safety up a notch with the inclusion of the Multi-Directional Impact Protection (MIPS) system for an extra boost of Impact force dissipation any time you (literally) hit the trail.

In addition to its penchant for safety, the A1 MIPS boasts a heap of features to keep you cool and comfortable. A total of 16 large vents usher cooling airflow and encourage constant air movement across your dome. A removable, soft and plushy Coolmax liner sits comfortably against your head, fending off the stink produced by bacteria, and not to ignore fit, the A1 MIPS helmet incorporates a three-position adjustable retention system for a custom, easily dialed fit.


  • A lightweight helmet built for technical trails
  • MIPS technology aims to reduce rotational force in certain crashes
  • Durable in-mold shell construction
  • Large vents promote cooling airflow
  • Highly adjustable retention system dials in the fit
  • Adjustable visor fends off branches and glaring sun
  • Item #TLD00VZ
mountain biking
Audio Compatible
Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older
Fit Adjustment
triple position adjustable retention system
16 vents
Manufacturer Warranty
1 year
Claimed Weight
[medium/large] 14.1oz (401g)
Shell Material
in-molded polycarbonate

Overall Rating

4.5 based on 9 ratings

Review Summary

1 Stars - 1 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 2 reviews
5 Stars - 6 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

March 8, 2024

Tony Lee A1 Mips

I've used it several times

Arrived quickly. Color matched my bike almost perfectly. Exactly as described and and a great price. Five star rated helmet on the VATech rating list.


Originally reviewed on

5 out of 5 stars

December 31, 2023

Very comfortable

Size Bought:

I've been mountain biking and road cycling for 20+ years. I have had an assortment of helmets but decided I'd better upgrade to MIPs helmets. This is my most comfortable and best-looking helmet to date. I love it. It felt true to size in a small for a 22.25" measurement.

esumnertim1667278 e
4 out of 5 stars

December 20, 2022

Runs small

I returned this product before using it
Size Bought:
5' 10"

Seems like a good quality helmet and nicely styled. I ordered according to my measured head size which was borderline L-XL. I picked L and it is way too small. I suggest ordering up one size.

John G
5 out of 5 stars

September 6, 2022

Great helmet

I've put it through the wringer
Size Bought:
6' 1"

Fits great for me, comfortable, breathable, and good looking

Rok G
5 out of 5 stars

February 25, 2022

If it ain't broke - don't fix it.

I've put it through the wringer

I'm on my 4th A1. Big fan of this helmet for all of it's features - but mostly the fit. I have tried to "update" to the Troy Lee A2 or A3 and those helmets just don't fit me very well (the A3 fits terribly in fact). They are designed with a different shape. With that said, I would like some updates to the A1 buckle - the magnet is nice. With that said, the A1 just fits right. It is not a modified road helmet that I will use on a mountain bike. May not be the best for an XC racer as it is a little warm.


Originally reviewed on

4 out of 5 stars

September 30, 2021

Good choice

I've used it once or twice and have initial impressions

As trusted, Troy Lee puts out a other great helmet. My ONLY complaint, is I wish the did individual sizes. Other than that, it performs well.

United N
1 out of 5 stars

April 21, 2021

Worst helmet >° of all time.

I've put it through the wringer

I would of returned it if I had other options during the pandemic but I had to replace my old one and so it was used. The helmet sits low in front and blocks your forward periphery. It has two points that come down on the back of my neck. It did fade after awhile. So I'll give that a pass. The padding has peeled apart and is now just hanging. The adjuster dial in back is partially stripped Not enough vents. Holds lots of sweat I would never =N buy this again or recommend.

Andrew H

Originally reviewed on

5 out of 5 stars

February 4, 2021


I've put it through the wringer

Loving this helmet. Light weight, adjustable, comfortable, breathable....good looking and protects my brainy bits. Normal head and i got the xs/s, its secure and feels good. Go for the best to save your brains. **recent crash, hit the ground hard enough to dent my helmet. Without the good technology i dont even know what sort of condition my head would be in. Just purchased another helmet...and looking forward to getting back on the saddle.

Ingrid J
5 out of 5 stars

August 5, 2020

Great quality

Size Bought:

Exactly what I was looking for. Snug fit not too big or bulky lots of ventilation 18 holes perfect for SFLA weather MIPS feature great quality looks great... for $150 not the cheapest other brands have better deal same quality but I wanted Troy Lee.

user image
Joilson M