Alpinestars RK-1 Plasma Knee Brace - Black/Red

Ergonomically designed for all types of off-road riding, the RK-1 PLASMA knee brace offers excellent knee support while remaining lightweight, breathable, and protective. It incorporates Nucleon PLASMA protection within an innovative hybrid structure, combining a flexible, over-injected composite with a high-performance polymer for optimal rigidity and increased flexibility in the strap areas.

This knee brace offers perfect structural integrity and support while remaining ultra-lightweight and adaptable. It thus reduces the risk of injury to the medial and lateral collateral ligaments, the anterior and posterior cruciate ligaments, and the lateral and medial menisci.

The replaceable, triple-segment knee shells are made with a polyurethane outer shell lined with Nucleon PLASMA protection for an optimal blend of flexibility, scratch resistance, and impact protection.

The self-centering knee shell and strategically positioned upper and lower patellar extensions ensure maximum coverage regardless of the flexion or extension angle.

The extremely stable and slim four-point hinge system perfectly follows the knee joint, while the extension stops, available in a 0-30 degree range, help adjust the knee brace to the desired maximum opening angle.

The stainless steel bushings of the four-point articulation system are treated against oxidation.

Nucleon PLASMA is a viscoelastic material made from bio-based polymers and molded to form a flexible structure in all directions, while maintaining its ability to dissipate impact energy. Lightweight and perfectly ventilated, the knee protector offers strong dispersion and absorption of impact force while ensuring maximum coverage in any riding position.

Its design effectively reduces the risk of ligament (ACL, PCL, MCL, LCL) and meniscal injuries.
The three-segment polyurethane knee shells are combined with a Nucleon PLASMA protector, offering an optimal balance of shock absorption, flexibility, and scratch resistance.

CE Approval:
Knee Protection – EN 1621-1:2012 Level 1