Alpinestars Chestprotector Nucleon KR-Cell CiS

The Nucleon KR-CELL CiS has been designed to offer protection to track and sports bike riders while ensuring maximum levels of breathability and comfort.



The Nucleon KR-CELL CiS has been designed to offer protection to track and sports bike riders while ensuring maximum levels of breathability and comfort.


• The Nucleon KR-CiS is a high performance, super lightweight track and race chest protector featuring Nucleon Cell technology.

• Four buttons ensure a secure engagement with the Alpinestars Slimfit Jacket.

• The double-layered chest shell plate is constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties.

• The chest protector's 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 curve of the back ensuring an optimum fit while riding.

• Soft comfortable air-mesh on the body side of the protector offers maximum breathability and rider comfort.

• According to European statutory law the CE mark is a conformity requirement for the marketing of this product. The following standards apply to this product:

• Chest protector according with the EN 1621-3 : 2018 Level 2.