The Alpinestars Nucleon Plasma Racing Chest Protector Insert is built for performance road riding and racing, delivering lightweight, breathable protection designed to integrate seamlessly with Alpinestars racing suits. CE Level 1 certified, this insert uses a composite construction with a semi-rigid thermoplastic central zone to help disperse impact forces in critical areas. The innovative Plasma M design promotes airflow and heat dissipation, keeping you cooler and more comfortable during high-intensity sessions. 

Extended side wings add rib coverage, while a soft tactile backing helps maintain the protector’s structure and prevent tearing over time. Silicone ribbing on the inner surface keeps the insert securely in place for a stable, adaptive fit that moves with you on the bike. Made from USDA-certified bio-based impact-absorbing material and exceeding CE certification requirements, the Nucleon Plasma Racing Chest Protector Insert delivers race-focused protection with comfort and flexibility you can rely on when it matters most.