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Alpinestars S-M3 Radium Helmet ECE 22.06, Motocross Helmet, Matte Gray, Black, and Yellow Fluo, featuring an angular aerodynamic design with a peak visor and integrated ventilation system
Alpinestars S-M3 Radium Helmet, Motocross and Enduro Helmet, Gray Black and Neon Yellow Fluo Matte, three-quarter view showing aggressive shell design, ventilated intake ports, and bold yellow logos
Alpinestars S-M3 Radium Helmet, Motocross Helmet, Gray Black and Yellow Fluo Matte, full-face design with angular shell, prominent visor and ventilation ports, matte finish with bold graphics
Alpinestars S-M3 Radium Helmet, Motocross Helmet, Green Black and Yellow Fluo Matte, thermo-injected shell with integrated visor and high-flow ventilation ports, engineered for MX and Enduro riding
Alpinestars S-M3 Radium Helmet, Full-Face Motocross Helmet, Matte Green and Black with Fluo Yellow branding, front view highlighting chin and forehead ventilation ports with a large eye port, professional off-road protective gear.
Alpinestars S-M3 Radium Helmet, Motocross Helmet, Green Black and Yellow Fluo Matte, rear view showing matte shell finish, neon yellow Alpinestars logo, and ECE 22.06 certification details.
Alpinestars S-M3 Radium Helmet, Motocross Helmet, Green, Black, and Yellow Fluo Matte, matte finish with multiple ventilation ports, sleek aerodynamic design with integrated visor, specialized protective headgear for off-road and MX racing

SM3 Radium Helmet ECE06/DOT

motocross

Regular price
$279.95
Size
Size guide
Color Gray/Black/Yellow Fluo Matt
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 8059347572086
SKU 8300826-9510-2XL
Complete the look
Vision 5 Hollow Goggles
Alpinestars Vision 5 Hollow Goggles, Motocross Off-Road Goggles, Charcoal and Yellow Fluo, reflective silver mirror lens with black frame, wide black strap with bold neon yellow branding and internal silicone grip, ventilation ports and plush face foam Vision 5 Hollow Goggles

Vision 5 Hollow Goggles

motocross goggles 2 colors
Regular price
$64.95
Tech 7 Boots
Alpinestars Tech 7 Boots, Motocross Boots, Yellow Fluo and Black, side profile view featuring a bright neon yellow TPU shell with four black buckles, reinforced heel and toe, pivot system for flexibility, and professional off-road racing aesthetic Tech 7 Boots

Tech 7 Boots

motocross boots 10 colors
Regular price
$499.95
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