A3 MIPS Helmet
A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet A3 MIPS Helmet

Troy Lee Designs

A3 MIPS Helmet


2 in stock

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Cyan Blue
Camo Green
Uno Black
Proto White
Camo Gray/Red
Uno Silver/Electro

Sizing Chart

Free return shipping within the USA!
All apparel and protection items are eligible for FREE return shipping, for the first return, within the USA. This gives you peace of mind when ordering products that may not fit right. Please note, the product must be in new condition with all original packaging.

Troy Lee Designs A3 MIPS Helmet

The new Troy Lee Designs A3 helmet is so comfortable you won't ever want to take it off. It sets a new standard in premium mountain bike helmets with luxurious comfort, patent-pending innovations in safety, ventilation that will you keep you cool on the longest climbs with comfort and coverage to protect on the sketchiest of descents. Highest possible score (5-STAR) from Virginia Tech helmet safety lab so you can feel confident in all conditions.


    • Co-molded EPP and EPS for low and high-speed Patent Pending impact energy management
    • B-Series MIPS Rotational Brain Protection system creates an optimal 360 degree fit that can maximize the safety features built into the A3
    • 3-Way Magnajust® visor easily accommodates goggles whether they are stowed on the upswing or on your face
    • TLD Sweat Glide System – EVA wicking foam behind the comfort liner along the front brow directs sweat away from the eyes and optics. Includes 2 spares
    • 2-piece Ionic® comfort liner for anti-microbial & sweat wicking properties that is also quick to dry
    • 16 vents optimally tuned with the channeling of the helmet to create the most intake and exhaust of any half shell helmet we've produced
    • Premium 3d Fidlock® magnetic buckle system and composite smart shear screws are made to shear away during severe impact/direct hit to visor
    • Includes helmet carrying bag, (2) spare sweat glide strips and a spare Ionic® comfort liner and sticker kit


    Core Material: Co-molded EPP and EPS
    Shell Material: Advanced layering 3-piece shell
    Adjustable Fit: Yes
    Ventilation: 16 vents
    MIPS Protection: Yes
    Safety Certification: CPSC 1203, CE EN 1078, AS NZ 2063:2008
    Intended Use: MTB
    Warranty: 1 year

    Specs subject to change without notice. Please check with manufacturer for the most up-to-date information.


    A3 MIPS Helmet

    Head Circumference 53-56 cm 57-59 cm 60-63 cm
    Measure around the circumference of your head holding the tape just above your eyebrows and ears.

    Reviews / Q&A

    Troy Lee Designs A3 MIPS Helmet: Cyan Blue / MD/LG: 150267033 - Cyan Blue / XL/XXL: 150267035 - Camo Green / XS/SM: 150967031 - Camo Green / MD/LG: 150967033 - Uno Black / XS/SM: 150267001 - Uno Black / MD/LG: 150267003 - Uno Black / XL/XXL: 150267005 - Proto White / XS/SM: 150256001 - Proto White / MD/LG: 150256003 - Proto White / XL/XXL: 150256005 - Camo Gray/Red / XS/SM: 150967021 - Camo Gray/Red / MD/LG: 150967023 - Camo Gray/Red / XL/XXL: 150967025 - Uno Silver/Electro / XS/SM: 150267011 - Uno Silver/Electro / MD/LG: 150267013 -