Pay in 4 interest-free payments of $23.49 Learn more
Ships within 48 hours · Estimated delivery Aug 19 - Aug 24
Ventilation System – Efficient front intake and rear exhaust design maintains airflow and helps reduce fogging
low-weight shell crafted from carbon fiber and aramid for enhanced protection
and race-focused fit
Perforated Microfiber Upper – Delivers optimal ventilation without sacrificing durability
it’s lightweight
Alpinestars Nucleon Flex PROi Full Back Protector Insert – Transparent Smoke/Red SP Connect Ventilation System – Efficient frontAlpinestars Nucleon Flex PROi Full Back Protector Insert Transparent Smoke RedDesigned for riders who demand uncompromising protection without sacrificing comfort, the Nucleon Flex PROi is Alpinestars top tier back protector insert. Built to seamlessly integrate into compatible Alpinestars jackets and suits, it delivers CE Level 2 certified impact absorption in a flexible, lightweight form. Featuring an advanced honeycomb design, the PROi offers