Alpinestars SX-1 Plasma Knee Guards

Experience next-level lower body defense with the Alpinestars SX-1 Plasma Knee Guards, engineered to deliver a perfect balance of premium impact protection and unrestricted mobility. These lightweight, CE Level 1 certified motocross knee protectors feature a highly ventilated, semi-rigid frame construction embedded with advanced Nucleon Plasma viscoelastic technology. Constructed from a USDA Biobased material, the pliable structure naturally molds to your knee for an adaptive fit while effectively dissipating heavy impact energy on the track or trail.

Designed for all-day comfort, the guards feature an integrated Dual Gear System (DGS) with synchronized gear profiles that mirror the natural articulation of your knee, keeping the armor perfectly positioned while you ride. A dual-density co-injected frame incorporates scooped upper and lower extensions to eliminate painful pressure points from boots or skin compression. Complete with a full-coverage Patella System to shield against handlebar strikes and an easy-to-use dual strap closure system, you can tackle your next off-road journey with absolute confidence when you gear up with RIDE Adventures.