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Alpinestars S-M3 Radium Helmet, Motocross Helmet, Black Red Fluo and White Glossy, featuring an aerodynamic design with an angular visor, ventilation ports, and a glossy finish, premium motorsports protection
Alpinestars S-M3 Radium Helmet, Motocross Helmet, Black Red Fluo and White Glossy, high-gloss finish with bold white Alpinestars branding and star logo, featuring a bright red visor peak and chin vent, engineered for off-road protection.
Alpinestars S-M3 Radium Helmet ECE 22.06, Motocross Helmet, Glossy Black with Fluorescent Red and White accents, front-facing view showing the aerodynamic shell, integrated visor, and protective chin bar with bold Alpinestars branding.
Alpinestars S-M3 Radium Helmet, Motocross Helmet, Black Red Fluo and White Glossy, rear three-quarter view showing sleek aerodynamic design, white branding and bright red visor, high-performance off-road protective headwear
Alpinestars S-M3 Radium Helmet, Motocross Helmet, Black Red Fluo and White Glossy, side profile view, featuring large white Alpinestars branding and star logo, red fluo peak and chin bar accents, glossy finish, engineered for MX and Enduro off-road riding.
Alpinestars S-M3 Radium Helmet ECE 22.06, Motocross Helmet, Glossy Black with Red Fluo and White accents, rear view displaying the aerodynamic shell design, white star logo, and certification labels.
Alpinestars S-M3 Radium Helmet, Motocross Helmet, Black Red Fluo and White Glossy, top view featuring the red fluo visor with white Alpinestars branding and sleek aerodynamic design.

SM3 Radium Helmet ECE06/DOT

motocross

Regular price
$279.95
Size
Size guide
Color Black/Red Fluo/White Glossy
SM3 Radium Helmet ECE06/DOT
SM3 Radium Helmet ECE06/DOT SM3 Radium Helmet ECE06/DOT
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Engineered for MX, Enduro, and off-road riding, the SM3 Helmet integrates advanced technologies and innovations designed to enhance ease of use, comfort, and impact protection.
  • Advanced Shell Construction: This helmet features a thermo-injected shell incorporating a special polymer blend enhanced by varying degrees of thickness that is engineered to deliver the optimal combination of impact protection and lightweight. The SM3 medium weighs 1430g (ECE) and 1460g (DOT).
  • Ventilation: Maximized ventilation and high levels of heat transfer exchange thanks to 10 inlets and seven exhaust ports.
  • Rotational Acceleration Force Protection: Alpinestars patented low-friction coating is applied to the inner part of the main EPS liner to reduce the rotational acceleration forces that can result from certain oblique impacts. This layer essentially acts as a slip plane to mimic the brain’s own low-friction cerebrospinal fluid, which is the body’s natural defense against oblique impacts.
  • Visor Release: Patented visor release system ensures the visor is released with the correct pre-determined amount of force, effectively reducing the forces on the rider’s neck during an impact.
  • The inner and outer surfaces are engineered to minimize the effects of oblique impacts.
  • 5 EPS inner parts with 4 densities to effectively manage volume and impact perfromance.
  • Hydration tube channels are integrated into the helmet’s cheek pads for convenience and performance.
  • Comfort liner is constructed using recycled materials for a lower carbon footprint.
  • The fit can be tailored to the rider’s head thanks to the helmet’s crown and cheek pads, which are available as genuine spare parts in different thicknesses.
  • Alpinestars has introduced a new in-house standard for the SM3 helmet to test the helmet’s chin to conditions heavier than the homologation standard, and in order to pass the Alpinestars’ new standards, the shell thickness and the structure of the helmet design itself have both been optimized on the chin area for superior impact performance.
  • The inner and outer surfaces are engineered to minimize the effects of oblique impacts.
  • Equipped with an Emergency Release System and removable cheek pads to permit the safe and easy removal of the cheek pads while the helmet is still on, while the 3D contoured foam ensures rider comfort.
  • Soft textile chin strap is 25mm for optimal safety and rider comfort.
  • Stainless steel D-rings ensure a tight and secure fit.
  • The SM3 helmet conforms to both DOT certification and ECE 2206 homologation for use worldwide.
EAN 8059347571997
SKU 8300826-1553-M
Complete the look
Vision 5 Blaze Goggles
Alpinestars Vision 5 Blaze Goggles, Motocross Goggles, Red frame and strap with Mirror Gold lens, featuring white astars branding on the side, lightweight A-FLEX frame with multi-layer face foam for off-road racing Vision 5 Blaze Goggles

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motocross goggles 3 colors
Regular price
$59.95
Tech 7 Boots
Alpinestars Tech 7 Boots, Motocross Boots, Black and Red Fluo, side profile view, featuring a four-buckle closure system, TPU protective shell with 'Tech 7' branding and white Astars logo on the heel, durable off-road racing footwear. Tech 7 Boots

Tech 7 Boots

motocross boots 10 colors
Regular price
$499.95
Expand

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