SM3 Radium Helmet ECE06/DOT RGroup_3206423 and an over-the-helmet hood

and an over-the-helmet hood

it uses USDA‑certified bio‑based PLASMA viscoelastic material and an extensively perforated design for airflow

Ergonomic reinforced

pre-curved knees

they combine high-grade optics

SM3 Radium Helmet ECE06/DOT RGroup_3206423 and an over-the-helmet hoodThe SM3 Radium is an advanced MX helmet developed for motocross, enduro, and off road riders seeking lightweight comfort and confidence in demanding terrain. Its optimized polymer shell, highly ventilated design, and integrated rotational impact management work with a patented visor release system to deliver elevated protection, cooling performance, and rider focused usability on every ride.