Since 1971, HJC has specialized in manufacturing motorcycle helmets exclusively. HJC helmets are constantly tested in both laboratory testing as well as in "real" life for quality assurance. HJC is equipped with its own state of the art wind tunnel testing laboratory to test for aerodynamics, ventilation, noise, etc.
HJC RHPA X Airaid Motocross Helmet Features:
Advanced P.I.M. (Premium Integrated Matrix) Construction
A matrix of Carbon Fiber, Aramid, Fiberglass and Organic Non-Woven Fabric create a remarkably strong yet extremely lightweight shell designed for superior fit and comfort.
Optimal Shell Sizing
Three shell sizes (XS-S, M-L and XL-XXL) provide riders with proportional sizing.
"ACS" Advanced Channeling Ventilation System
Full front to back airflow flushes heat and humidity up and out.
Large Eye Port
For maximum visibiliity and superior goggle fit.
Premium soft feel with Ginkgo Extract, moisture-wicking and odor-free interior with advnaced silver anti-bacterial fabric. Crown and cheek pads are fully removable and washable.
Snell / DOT approved
Proper Fit Guidelines:
1. Measure your head using a cloth tape measure about one inch above your eyebrows.
2. Use the sizing chart below to select the helmet size that corresponds most closely to your head measurement.
Note: Helmets must be returned with plastic shield protector still attached.