The Alpinestars Nucleon KR-1 Cell Back Protector combines race-proven protection with lightweight performance for serious sport riders. Its hard plastic lattice shell delivers strong impact resistance while maintaining excellent ventilation to keep you cool during intense riding. Built from a high-performance polymer blend, the KR-1 Cell features extended lower back coverage and horizontal flexion grooves that move with your body for a comfortable, adaptive fit. The soft Bio-Foam padded chassis adds all-day comfort, while adjustable shoulder straps and a height-adjustable kidney belt ensure a secure, personalized fit. CE EN 1621-2:2014 Level 2 certified, this protector provides professional-grade safety without the bulk.
