ALPINESTARS(MX)

HELMET SM3 RADIUM BLK/WH/GY XL

SM3 Radium Helmet

  • Varied thickness shell construction for optimized protection and light weight
  • Optimized for MX, Enduro, and Offroad use
  • Delivers blend of performance, protection, and comfort
  • Key Features
  • Features thermo-injected shell incorporating a polymer blend enhanced by varying degrees of thickness that is engineered to deliver the optimal combination of impact protection and light weight
  • Lightweight outer shell is constructed from impact resistant thermoplastic
  • Inner shell constructed with a composite fiber assembled between the outer shell and the EPS liner for maximum protection against impacts
  • Fit can be tailored to the rider's head thanks to the helmet's crown and cheek pads
  • Construction
  • Multiple density inner liner ensures the helmet is equipped with the correct density in the correct area for enhanced impact absorption, while also helping to reduce overall weight
  • 6-piece EPS liner with five densities to effectively manage volume and impact performance
  • Polished inner EPS liner with special coating to reduce friction with comfort liner for rotational impact management
  • The inner and outer surfaces are engineered to minimize the effects of oblique impacts
  • Low friction coating is applied to the inner part of the main EPS liner to reduce the rotational acceleration forces that can result form certain oblique impacts
  • Maximized ventilation and high levels of heat transfer exchange thanks to ten inlets and seven exhaust ports
  • The visor has been designed to direct air into the ports for enhanced airflow
  • 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
  • Comfort liner is constructed using recycled materials for a lower carbon footprint
  • Hydration tube channels are integrated into the helmet's cheek pads for convenience and performance
  • Soft textile chin strap is 25 mm for optimal safety and rider comfort
  • Protection
  • 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
  • Chin area optimized for superior impact performance
  • Stainless steel D-rings ensure a tight and secure fit
  • 48% Acrylonitrile-Butadiene-Styren, 20% Polyurethane, 16% Polystyrene (EPS), 6% Polypropylene, 4% Polyvinil Chloride, 2% Ethylene-Vinyl Acetate, 2% Steel, 1% Expanded Polypropylene, 1% Polyamide


  • € 254,04 incl. VAT

    In stock

    Ask about delivery time
    We prepare your vehicle for the road
    Large assortment
    Specialized in recreational vehicles
    SM3 Radium Helmet

  • Varied thickness shell construction for optimized protection and light weight
  • Optimized for MX, Enduro, and Offroad use
  • Delivers blend of performance, protection, and comfort
  • Key Features
  • Features thermo-injected shell incorporating a polymer blend enhanced by varying degrees of thickness that is engineered to deliver the optimal combination of impact protection and light weight
  • Lightweight outer shell is constructed from impact resistant thermoplastic
  • Inner shell constructed with a composite fiber assembled between the outer shell and the EPS liner for maximum protection against impacts
  • Fit can be tailored to the rider's head thanks to the helmet's crown and cheek pads
  • Construction
  • Multiple density inner liner ensures the helmet is equipped with the correct density in the correct area for enhanced impact absorption, while also helping to reduce overall weight
  • 6-piece EPS liner with five densities to effectively manage volume and impact performance
  • Polished inner EPS liner with special coating to reduce friction with comfort liner for rotational impact management
  • The inner and outer surfaces are engineered to minimize the effects of oblique impacts
  • Low friction coating is applied to the inner part of the main EPS liner to reduce the rotational acceleration forces that can result form certain oblique impacts
  • Maximized ventilation and high levels of heat transfer exchange thanks to ten inlets and seven exhaust ports
  • The visor has been designed to direct air into the ports for enhanced airflow
  • 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
  • Comfort liner is constructed using recycled materials for a lower carbon footprint
  • Hydration tube channels are integrated into the helmet's cheek pads for convenience and performance
  • Soft textile chin strap is 25 mm for optimal safety and rider comfort
  • Protection
  • 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
  • Chin area optimized for superior impact performance
  • Stainless steel D-rings ensure a tight and secure fit
  • 48% Acrylonitrile-Butadiene-Styren, 20% Polyurethane, 16% Polystyrene (EPS), 6% Polypropylene, 4% Polyvinil Chloride, 2% Ethylene-Vinyl Acetate, 2% Steel, 1% Expanded Polypropylene, 1% Polyamide


  • Article number
    01109157:8300726-1546-XL
    Base Color
    Black
    Base Finish
    Gloss
    Color/Finish
    Black| Gray| White
    Features
    Vented
    Gender
    Unisex
    Graphic
    Radium
    Model
    SM3
    Product Name
    Helmet
    Research Value
    Finalized
    Riding Style
    ATV| Off-Road| UTV
    Shell Material
    ABS
    Size
    XL
    Size Group
    Adult
    Type
    MX
    Units
    Each

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    Why QFF?

    Specializing in recreational vehicles

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    Specializing in recreational vehicles

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