Alpinestars Nucleon KR-Cell Cis

alpinestars KR-Cell CIS Chest Protector

An ergonomic insert optimized for performance riding, the lightweight Nucleon KR-Cell CiS Protector incorporates an advanced micro-structure cell design for efficient impact energy absorption and high levels of airflow for the perfect comfort. Snap fasteners hold the protector where it should be, therefore suitable for all jackets with corresponding snap fastener device.


  • High performance, super lightweight track and race protector featuring Nucleon Cell technology
  • Four buttons ensure a secure engagement with Alpinestars jackets
  • The double-layered shell plate is constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties
  • The chest protectors structural design changes from the center towards the outside and provides the perfect balance between force dispersion and energy absorption
  • Unique Cell microstructure designed for advanced energy absorption, adaptivity, maximum breathability and airflow
  • Ergonomic protection plate contours to the natural body line ensuring an optimum fit while riding
  • Soft comfortable air-mesh on the body side of the protector offers maximum breathability and rider comfort


  • certified to prEN 1621-3:2016- Level 2


  • 65% TP Polyurethane, 30% Polyester, 5% Others


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