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Alpinestars MX Motocross Supertech SM8 Radium Helmet - Fluro Orange White/Gold Matte/Glossy

SKU AS8301219405960
Closeout Save 23% Save 23%
Original price $649.95
Original price $649.95 - Original price $649.95
Original price $649.95
Current price $499.00
$499.00 - $499.00
Current price $499.00
Size: L
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Alpinestars MX Motocross Supertech SM8 Radium Helmet


  • Lightweight outer shell is constructed from technologically advanced composite materials in four sizes for best Fitting.
  • Multiple density inner liner.
  • Fitted with E -Z latest generation of MIPS, integrated low-friction layer designed to reduce rotational motion transferred to the brain from angled impacts to the head.
  • Visor attached to helmet shell with patented system that will allow easy release in case of crash.
  • Adjustable top pad height (Alpinestar's patented A Head system).
  • Maximized ventilation with 19 intakes and 5 exhaust Ports.
  • Side shell shape coupled with soft EPP foam prevents damage to collarbone in event of crash.
  • Emergency release and removable cheek pads, 30 contoured foam.
  • Removable comfort liner, anti-moisture and antibacterial fabrics.
  • Hydration prepared.
  • E-Ject prepared
  • Note: All our helmets are purchased directly from Australian supplier and carry the ECE 22.05 or 22.06 standard

Alpinestars Helmet Sizing

Size Head (cm)
2XS 51 - 52
XS 53 - 54
S 55 - 56
M 57 - 58
L 59 - 60
XL 61 - 62
2XL 63 - 64
3XL 65 - 66

IMPORTANT Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Always aim to get a tight fitting helmet, if you fall between sizes than we suggest you round the size down, not up. The exception being kids as they are still growing you would be safe to round up to the nearest size.

How to Measure

H HEAD Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.

On all orders over $100*.


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