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Alpinestars SM3 Radium Helmet Black/White/Gray (S2XL)

$279.95$139.98
  • 30 days easy returns
  • same day dispatch
Product Description

Alpinestars SM3 Radium Helmet Gloss Black/White/Gray (S2XL)

The new Alpinestars SM3 Radium helmet delivers performance, comfort, and protection in a lightweight, value-packed package. Built for MX, enduro, and off-road riders, this helmet is ECE 22.06 and DOT certified and features advanced rotational impact management and ventilation in a sleek gloss black/white/gray finish.

Whats Included

  • 1x Alpinestars SM3 Helmet (Radium graphic)

  • Removable crown and cheek pads

  • Adjustable breakaway visor

  • Hydration channel-ready cheek pads

  • Helmet bag

  • Sizes: S, M, L, XL, 2XL

Fitment

  • Riding style: MX, Enduro, Off-Road, UTV, ATV

  • Gender: Unisex

  • Size group: Adult

  • Available sizes: Small through 2XL

  • Model: SM3 Radium

Warranty Info

Covered under Alpinestars’ limited manufacturer warranty. Visit Alpinestars.com for coverage details.

Key Features

  • DOT & ECE 22.06 certified for safety compliance

  • Thermoplastic shell with varied thickness for optimized weight and protection

  • Composite fiber-reinforced inner shell for enhanced impact resistance

  • 6-piece EPS liner with 3 densities for targeted impact absorption

  • Maximized airflow: 10 intake and 7 exhaust ports

  • Breakaway visor system reduces neck strain during crashes

  • Low-friction EPS liner for improved rotational impact protection

  • Emergency Release System (ERS) and 3D cheek pads for safer removal

  • Chin strap: 25mm soft textile with stainless steel D-rings

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