Riding Helmet Speed Air 4S by GPA

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New Worldwide Safety Concept: REDLINE Collection. This new concept patented by GPA helmet helps absorb shocks in succession, thus doubling your security. 

What happens during an impact to the helmet?

The point of impact is the center of a shock wave that can cause damage. Traditionally helmets are composed of two layers, a rigid shell and an EPS foam liner

The REDLINE collection is composed of four layers of materials. The 4S superposition offers remarkabledamping ability and better resistance to lateral compression.


1S: Outer shell to cushion the first part of the shock waves. Made and designed absorbent polymer to deform under impact.

2S: This layer absorbs the residual shock wave.

3S: This is the main hull, reinforced with fiberglass, it provides rigidity and protection of the cranial box.

4S shell in EPS just finished decelerating shock crashing allowing no forward pressure on the cranial box andminimizes the risk of cranial lesions. 

DESIGN Speed'Air 4S:

  • Maximum ventilation with 3 large vents in the front and two in back.
    Anatomical jugular red leather stitched.
  • Contour EPS red leather interior: aesthetics and durability. Leather chin.
  • Interchangeable interior foam, treated Sanitized and Coolmax, breathable and antibacterial. Machine washable
  • The contoured visor turbo effect channels the airflow to the vents and reduces wind resistance. Made of elastomer material to reduce the risk of fracture of the nose, it is ialso nterchangeable.
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