Alpinestars 2026 A-4 Plasma Body Protector Black / Red / White

The Alpinestars ROOST GRD A-4 PLASMA Black/Red/White is a premium roost guard / chest protector that combines maximum impact protection with ultra-lightweight weight and superior ventilation. Designed for serious motocross, supercross, and enduro riders who demand the very best protection without compromising on comfort and freedom of movement.

This A-4 Plasma Roost Guard features a semi-rigid thermoplastic polyhedron chest plate that offers excellent structural strength and effectively disperses impacts. At the back, you’ll find the advanced Nucleon Plasma back protector – made from USDA Certified Biobased viscoelastic material. This flexible, bio-based polymer adapts perfectly to your body, absorbs hard impacts, and remains supple in all directions. The protectors are CE Level 1 certified and provide powerful protection during crashes and roost.

The anatomical fit is specially developed for all types of off-road riding. Over-injected flexible side wings follow the contours of your body for a custom fit, while the high-breathability construction with extensive ventilation vents keeps you cool and dry, even during intense training sessions or warm race days. The ribbed inner lining increases comfort and quickly wicks away moisture.

With the bold Black/Red/White color scheme from the A-4 Plasma series, you’ll stand out instantly and the protector pairs perfectly with your Alpinestars jersey and pants. Lightweight, extremely comfortable, and yet extremely strong – this roost guard is the ideal upgrade for riders who want top-tier protection without the heavy, restrictive feel of traditional chest protectors.

Ideal for: motocross and enduro riders looking for a lightweight, well-ventilated, high-quality chest and back protector for daily intensive use.