Alpinestars Rintasuoja Nucleon Flex Pro Ci

The Nucleon Flex Pro Ci features an easy-to-use, unisex, divided CE-certified Level 2 chest protector. Highly ventilated and very lightweight, the ergonomically designed protectors are excellent for everyday riding.



The Nucleon Flex Pro Ci features an easy-to-use, unisex, divided CE-certified Level 2 chest protector. Highly ventilated and very lightweight, the ergonomically designed protectors are excellent for everyday riding.


• The Nucleon KR-Ci is a high performance, super lightweight track and race chest protector featuring Nucleon Flex Pro Technology.

• Constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties.

• The ergonomic protection plate contours to the natural curve of the body ensuring optimum fit for men and women.

• According to European statutory law the CE mark is a conformity requirement for the marketing of the product. The following standard applies: Level 2 EN 1621-3:2018 (Chest)

• The chest protector's structure provides the perfect balance between force dispersion and energy absorption.

• Unique Nucleon Flex Pro microstructure is designed for advanced energy absorption, adaptivity, maximum breathability and enhanced airflow.