Alpinestars Nucleon Flex PROi Full Back Protector Insert – Transparent Smoke/Red

Alpinestars Nucleon Flex PROi Full Back Protector Insert – Transparent Smoke/Red
Designed 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 optimized airflow and ergonomic contouring for all-day wear. Its low-profile structure allows for natural movement on and off the bike while maintaining critical coverage across the spine and back. The transparent smoke/red colorway adds a unique, technical edge to this race-ready insert.

Key Features:

• CE Level 2 Certified – Maximum back protection for high-impact scenarios

• Ergonomic Flex Design – Conforms to body movement for enhanced mobility

• Honeycomb Ventilation Structure – Promotes airflow for improved comfort

• Lightweight & Low Profile – Minimal bulk with maximum performance

• Jacket Integration Ready – Designed to fit select Alpinestars jackets and race suits

• Durable Thermoplastic Polymer – Resilient and impact-resistant build

• Transparent Smoke/Red Finish – Technical look with signature Alpinestars styling

Ideal for sport, track, or touring riders, the Nucleon Flex PROi combines advanced safety technology with long-ride comfort.