Alpinestars Knee Guards
Alpinestars AS65003261498
Alpinestars SX-1 Plasma Knee Protector
R2,550.00
PRODUCT INFO
The Alpinestars SX-1 Plasma Knee Protector is designed for motocross and off-road riders who need dependable impact protection without sacrificing comfort or movement. It combines a ventilated, semi-rigid frame with advanced Nucleon Plasma technology. As a result, riders gain confidence and control in demanding conditions.
At the core, the Nucleon Plasma knee protector uses USDA-certified biobased viscoelastic material. This construction delivers a close, flexible fit while effectively absorbing impact energy. Meanwhile, the Dual Gear System (DGS) supports smooth, controlled articulation, allowing the knee to move naturally throughout the ride.
Comfort also plays a key role. The dual-density co-injected frame features soft polymer upper and lower extensions. Therefore, it reduces pressure points from boots and prevents digging into the skin. In addition, the ergonomic frame design adapts to different leg shapes, ensuring stability without restriction.
Protection remains consistent at every angle. The Patella System maintains full knee-cap coverage, while a rigid outer shell defends against direct impacts, including handlebar strikes.
Key Features
- Advanced Impact Protection: Nucleon Plasma knee protector made from USDA-certified biobased viscoelastic material for flexible, energy-absorbing performance.
- Dual-Density Co-Injected Frame: Combines support and comfort, with soft polymer extensions to eliminate pressure points.
- Smooth, Natural Movement: Dual Gear System (DGS) creates controlled hinge motion that mirrors natural knee articulation.
- Secure, Adaptive Fit: Ergonomically sculpted frame with rigid and flexible zones for stability across different leg sizes.
- Full Patella Coverage: Patella System with rigid outer shell ensures constant protection from all impact angles.
Construction
- Lightweight knee protector with extended coverage and a slim ergonomic profile.
- High-performance polymer upper and lower frames for strength, flexibility, and reduced weight.
- Dual-pivot hinge maintains correct alignment during riding.
- Dual-strap system with hook-and-loop and snap-fit buckles for fast entry and a secure, personalised fit.
- CE Certified: EN 1621-1:2012 – Level 1.
In conclusion, the SX-1 Plasma Knee Protector delivers reliable protection, lasting comfort, and natural movement. It is an ideal choice for motocross, enduro, and off-road riders seeking performance without bulk.

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