Alpinestars Bionic Pro Plasma Knee Protectors | S/M | Off-Road Motorcycle Knee Guards

The Alpinestars Bionic Pro Plasma Knee Protectors are engineered for serious off-road riders who demand lightweight protection without sacrificing coverage or comfort. Built around the innovative Nucleon Plasma bio-based viscoelastic insert, these knee guards absorb and dissipate impact energy in all directions — keeping you protected on the trail, track, or enduro course.

The anatomically profiled chassis delivers a secure, contoured fit for Small/Medium riders, while the dual thermoplastic shells over the patella provide superior abrasion resistance and sliding performance. Perforated, stretchable inner padding promotes airflow to keep you cool during extended rides.

Key Features

• Nucleon Plasma insert — bio-based, viscoelastic material that dissipates impact energy while remaining pliable in all directions; removable for easy cleaning
• Dual thermoplastic shells over the patella for enhanced abrasion resistance, sliding performance, and impact protection
• Slip joint construction for high articulation and natural movement without sacrificing fit
• Wide elasticated top strap for a comfortable, secure closure during intense riding
• Extended lower and side knee coverage for protection in vulnerable zones
• Upper calf and hem silicone strips keep the protector locked in place during dynamic movement
• Pre-shaped perforated padding promotes airflow and all-day comfort
• Soft tactile inner lining for comfort against the skin

Product Specifications

• Brand: Alpinestars
• MPN / SKU: 6503125-132-SM
• Size: Small / Medium
• Weight: 1.47 lbs
• Intended Use: Off-road, motocross, enduro, trail riding