Alpinestars Nucleon KR-R Cell Back Protector

Alpinestars Nucleon KR-R Cell Back Protector

Engineered for track days and aggressive sport riding, the Alpinestars Nucleon KR-R Cell Back Protector offers high-performance impact protection in a low-profile, race-ready design. Constructed using a flexible yet highly ventilated polymeric cell structure, this CE Level 2-certified protector ensures optimal airflow and energy absorption without sacrificing mobility.

Designed to be worn under a race suit or jacket with a secure waist strap and adjustable shoulder harness, the KR-R Cell provides impact coverage for the spine while maintaining comfort during long sessions. Lightweight, ergonomic, and ventilated — it’s a go-to choice for serious riders demanding professional-level safety.

Key Features:

• Cellular Polymeric Structure – Delivers maximum ventilation and flexibility

• CE Level 2 Certified – Premium impact protection for high-speed riding

• Ergonomic Race Fit – Contours to the back for a low-profile feel under leathers

• Adjustable Waist and Shoulder Straps – Personalized, secure fit for any rider

• Removable Shoulder Straps – Option to use standalone or with race suit integration

• Lightweight Construction – Engineered for all-day comfort and reduced fatigue

• Air Channel Ventilation System – Promotes airflow for cooler rides

Purpose-built for performance and comfort, the Alpinestars Nucleon KR-R Cell Back Protector offers elite spine protection for the track or the street.