Alpinestars Nucleon KR-1 Cell Back Protector

Alpinestars Nucleon KR-1 Cell Back Protector

The Alpinestars Nucleon KR-1 Cell Back Protector delivers top-tier track protection with a hybrid construction engineered for elite-level impact absorption. Designed with a rigid central spine structure surrounded by flexible, ventilated polymeric cells, the KR-1 Cell strikes the perfect balance between strength, flexibility, and airflow.

Certified to CE Level 2 standards, this protector is built for high-speed riding and race-day intensity. It features a low-profile ergonomic design, adjustable shoulder straps, and a secure waistband for a customizable fit under leathers or riding jackets. Ideal for riders who demand serious protection without compromising on comfort or movement.

Key Features:

• Hybrid Hard Shell + Cell Technology – Combines rigid support with ventilated comfort

• CE Level 2 Certified – Maximum protection for high-performance riding

• Race-Ready Ergonomic Profile – Contours to the spine for low-bulk wear under suits

• Adjustable Shoulder and Waist Straps – Secure and personalized fit

• Ventilated Polymeric Cell Structure – Enhances airflow and reduces heat buildup

• Removable Shoulder Straps – Compatible with suits or jackets with built-in armor pockets

• Lightweight and Durable – Ideal for long track sessions and street performance

The KR-1 Cell Back Protector is the professional rider’s armor of choice — high-impact protection and airflow in a race-focused design.