Half Shell 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
Head of the class.
Head of the class.
Head of the class.
Half Shell 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
Head of the class.
Head of the class.
Head of the class.
1 25

FEATURES & TECH

VISOR

3-Way Magnajust® visor

SHELL

Advanced layering 3-piece shell

Exceeds bicycle certifications: CPSC 1203, CE EN 1078, AS NZ 2063:2008* (* varies by regional standards)

Mips®

B-Series Mips® Rotational Brain Protection co-molded into retention system

Weight: 415g

VENTILATION

16 vents optimally tuned with the channeling of the helmet

RETENTION SYSTEM

Micro-adjust 360-degree retention system

BUCKLE SYSTEM

Premium 3D Fidlock® magnetic buckle system

COMFORT LINER

Customizable 2-piece Ionic® comfort liner for anti-microbial & sweat wicking properties that is also quick to dry

SWEAT GLIDE SYSTEM

EVA wicking foam

Size Chart

Measuring your head with a fabric tape measure around the circumference of your head holding the tape just above your eyebrows and ears. 1” = 25mm

Size XS/S M/L XL/XXL
HAT SIZE 6 5/8 - 7 7 7/8 - 7 3/8 7 1/2 - 7 7/8
CM 53 - 56 57 - 59 60 - 63
IN 20 7/8 - 22 22 3/8 - 23 1/4 23 5/8 - 24 3/4