Bonhams Cars : Alain Prost's 1984 race worn Dallas Grand Prix GPA helmet,
GPA Speed Air 4S Riding Helmet
Vintage Classic By GPA Motorcycle Racing Helmet Casque Design Rare | eBay
4S Speed Air TLS
Buy GPA 4S Speed Air Hybrid Riding Helmet | horze.com
One of the newer GPA helmet styles. I like these, IF they're worn a certain way: all dark (offset design) and… | Riding helmets, Horse helmets, Horse riding helmets