Alpinestars Polvisuoja Nucleon Flex Pro

Incorporating innovative Nucleon Flex Pro technology that is lightweight and ventilated, the Nucleon Flex family of protectors is ergonomically engineered for comfort, convenience, performance and protection.



Incorporating innovative Nucleon Flex Pro technology that is lightweight and ventilated, the Nucleon Flex family of protectors is ergonomically engineered for comfort, convenience, performance and protection.


• Ergonomic design provides high levels of movement.

• Open design structure ensures high levels of airflow and ventilation.

• 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 1621-1:2012

• Slim design gives a low protector profile, meaning the protection appears discreet in the garment off the bike.

• Adaptive design means the protector moulds to the rider's body shape for enhanced levels of comfort.