Ride harder and stay protected with the Alpinestars A-5 Plasma Chest Protector, purpose-built for serious motocross and supercross riders who want maximum safety without extra bulk. Designed around Alpinestars’ advanced Nucleon PLASMA technology, this chest protector uses a USDA-certified bio-based viscoelastic material that stays soft and flexible while you move, then instantly firms up on impact to absorb energy where it matters most.

The A-5 Plasma stands out for its rider-focused comfort. Its anatomical shape follows your natural body lines, while semi-rigid thermoplastic outer shells are mounted on highly perforated 3D mesh panels to deliver excellent airflow in hot riding conditions. The independent side wings and fully adjustable strapping system create a secure, close-to-body fit that feels almost unnoticeable once you're on the bike.

Built for aggressive off-road use yet lightweight enough for long sessions, the A-5 Plasma provides CE Level 2 certified protection for riders who demand performance, breathability, and modern eco-conscious materials in one premium chest protector.