GPA Speed Air 4S Helmet
The GPA® Speed Air 4S Helmet* is an updated Speed Air design that incorporates GPA’s innovative Redline 4S technology. With 50 years of expertise in the design of helmets, GPA created the Redline 4S collection following a patented principle that allows for a new level of shock absorption.
Riding helmets** are traditionally made of two layers, a rigid shell and an EPS foam liner. GPA’s Redline 4S helmets are designed with four elements:
- 1S: Outer shell absorbs the first round of shock and deforms under impact.
- 2S: Foam layer that absorbs impact energy.
- 3S: Main shell made of polyamide and reinforced with fiberglass provides rigidity.
- 4S: EPS foam liner helps decelerate shock under the pressure of impact.
The Speed Air 4S has a shaped turbo-effect visor that channels airflow to the air vents. Three large vents in front and two vents in back allow airflow within and between the hulls. Interchangeable and adjustable comfort foam interior padding is machine washable, moisture-wicking, breathable and antibacterial. Anatomically-shaped high-quality leather chin strap is secured by four riveted fixing points which ensures a perfect fit in almost any situation.
*Some colors and sizes may require 6-8 weeks to ship*
Check out the customization options for all GPA helmets here
*No refunds or exchanges on helmets / **ASTM F1163-15/SEI Certified.