Alpinestars SX1 Plasma Knee Protector

Knee protector with Nucleon Plasma technology, Dual Gear System articulation, and a ventilated semi-rigid frame.

The Alpinestars SX1 Plasma Knee Protector combines advanced impact protection with exceptional comfort and mobility. Featuring a Nucleon Plasma knee protector embedded within a highly ventilated semi-rigid frame, it delivers effective impact absorption while maintaining flexibility and airflow. The integrated Dual Gear System (DGS) promotes smooth, natural knee articulation, while the ergonomically sculpted dual-density frame adapts to a wide range of leg shapes for a secure and comfortable fit. A rigid Patella System shell provides full knee coverage and enhanced protection against impacts and handlebar strikes.

Features:

• Nucleon Plasma knee protector
• USDA Biobased certified viscoelastic material
• Highly ventilated semi-rigid frame construction
• Dual Gear System (DGS) for natural knee articulation
• Dual-density co-injected frame design
• Soft polymeric lower extension reduces pressure points
• Scooped upper extension enhances riding comfort
• Ergonomically sculpted frame construction
• Strategically positioned rigid and flexible shell sections
• Patella System provides full knee cup coverage
• Rigid outer Patella shell for added impact protection
• Adapts to a wide range of leg circumferences

Protection:

• Knee Protector Certification: EN 1621-1:2012 Level 1