• Constructed from a high-performance polymeric material blend
• Extended lower back protector
• Highly perforated for maximum breathability and ventilation
• Horizontal flexion grooves for an adaptive fit
• Adjustable, detachable elastic shoulder straps
• Height-adjustable kidney belt with hook and loop closure
• Soft Bio-Foam padded chassis
• CE EN 1621-2 : 2014 Level 2

The Alpinestars Nucleon KR-1 Cell Back Protector delivers race-focused protection in a lightweight, breathable design built for sport riding. A hard plastic lattice shell provides strong impact resistance while remaining highly ventilated to help manage heat during aggressive riding. Constructed from a high-performance polymer blend, the KR-1 Cell features extended lower back coverage and horizontal flexion grooves for a comfortable, adaptive fit. A soft Bio-Foam padded chassis enhances comfort, while adjustable shoulder straps and a height-adjustable kidney belt allow for a secure, customized fit. Certified to CE EN 1621-2:2014 Level 2, it offers high-level protection without unnecessary bulk.