The Nucleon range of road protection features a superb anatomical fit and comfort. Constructed with innovative protector plates which are lightweight and feature a high performance polymeric blend for protection. Featuring new, modular rib protectors for strategic protection in a vulnerable area, the Nucleon KR-3 Protector offers excellent performance under an outer leather or textile garment.

Ergonomically designed for all forms of road riding, the Nucleon PLASMA Divided Chest Protector Insert has been engineered to be lightweight, breathable, comfortable and protective and is purposely designed to fit inside all Alpinestars jackets.

The NUCLEON KR-TB features a lightweight and easy to use back protection extension for the lowest part of your spine (coccyx). Can be fitted on the KR-1, KR-R and KR-2 back protectors.

The extremely lightweight Level 2 CE and UKCA certified Nucleon Plasma Back Protector Insert features Alpinestars’ Nucleon Plasma Technology. Unique to Alpinestars, Plasma is an eco-friendly, sustainable and lightweight impact-absorbing material, while its clever design delivers class-leading levels of adaptability, breathability and ventilation. Backed with a soft-touch textile coating, this ultra-adaptive protector delivers the optimum balance of force dispersion, flexibility and comfort.