8301825-9510-YS

Alpinestars Youth SM3 Radium Helmet

This part usually ships in 5-7 business days.
Size
Color
Matte Gray/Black/Yellow Fluo
Gloss Yellow Fluo/Black/Blue

Features

  • 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 light weight
  • Lightweight outer shell constructed from a technologically advanced impact resistant thermoplastic
  • The fit can be tailored to the rider’s head thanks to the helmet’s crown and cheek pads, which are available as spare parts in different thicknesses
  • The 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
  • 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 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
  • 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
  • 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
  • Stainless steel D-rings ensure a tight and secure fit

PROPOSITION 65

⚠WARNING

This product can expose you to chemicals known to the State of California to cause Cancer or birth defects and reproductive harm. For more information go to: https://oehha.ca.gov/proposition-65

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PRODUCT DESCRIPTION

Features

  • 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 light weight
  • Lightweight outer shell constructed from a technologically advanced impact resistant thermoplastic
  • The fit can be tailored to the rider’s head thanks to the helmet’s crown and cheek pads, which are available as spare parts in different thicknesses
  • The 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
  • 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 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
  • 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
  • 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
  • Stainless steel D-rings ensure a tight and secure fit
PROPOSITION 65

⚠WARNING

This product can expose you to chemicals known to the State of California to cause Cancer or birth defects and reproductive harm. For more information go to: https://oehha.ca.gov/proposition-65

FITMENT
WARRANTY

Warranty Policy

All parts sold by KTM Twins are covered exclusively under the manufacturer’s warranty, if applicable. KTM Twins does not provide any additional warranties, express or implied, beyond what is offered by the manufacturer.

View our returns policy for more information.

Package Protection

KTM Twins has partnered with Redo to provide customers with the option of Free Returns and Package Protection at checkout.

By selecting this option, your order is protected in the event it is lost, damaged, or stolen during transit, and you’ll also receive the benefit of free return shipping if you need to send something back within 30 days of delivery.

If you choose not to purchase Redo’s Free Returns and Package Protection at checkout, you will be responsible for the cost of return shipping, and KTM Twins will not be liable for packages that are lost, stolen, or damaged in transit.

View our shipping policy for more information.