Alpinestars Knee Brace
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Alpinestars Knee Braces: Italian Engineering Meets Off-Road Demands
When it comes to protecting one of the body's most vulnerable joints on the track or trail, few brands bring the pedigree and technical depth of Alpinestars. Founded in Italy and rooted in motorsports and action sports safety, Alpinestars has spent decades refining knee protection into a precise science — and their lineup of knee braces is among the most engineered in the industry.
The Nucleon PLASMA Advantage
A defining feature across Alpinestars' knee brace range is the proprietary Nucleon PLASMA protector system. The Nucleon PLASMA element is constructed from a bio-based viscoelastic impact-absorbing compound, with no less than 25% bio-based content, molded into a precision-engineered geometry. This core technology appears across multiple tiers of the lineup, from entry-level to flagship models, delivering a consistent blend of energy absorption and rider comfort.
Key Product Lines
RK-1 PLASMA & RK-7 PLASMA: Anatomically profiled for all forms of off-road riding, these braces feature a Nucleon PLASMA knee protector encased in an innovative hybrid frame construction — a flexible composite over-injected on a high-performance polymer blend — offering superb frame rigidity while remaining flexible at the upper and lower strap areas. Padded X-straps backed with a non-slip material keep the brace securely in position, and are profiled to avoid pinching the back of the knee when fully flexed.
Supertech RK-10 PLASMA: Alpinestars' flagship off-road knee brace takes everything further. Constructed with a 34-layer carbon frame, the RK-10 PLASMA features a free-floating Nucleon PLASMA knee protector encased in an innovative asymmetric forged carbon fiber frame construction for the highest levels of rigidity and superior weight-saving properties.
Bionic-7 Knee Brace: Incorporating an evolved chassis constructed from an innovative, advanced fiber-glass compound, the fully CE-certified Bionic-7 is designed for the stresses of off-road riding, providing support and helping protect against hyper-extension in the event of a crash. An extremely stable slim-design 4-point hinge system perfectly follows the articulation of the knee, with easily exchangeable extension stops at 0, 5, 10, 15, 20, 25, and 30 degrees, reducing the risk of ligament and meniscus injuries.
CE Certification & Ligament Protection
Alpinestars knee braces provide optimal structural integrity, rigidity and comfort, reducing the rider's risk of sustaining injuries to the medial and lateral collateral ligament, the anterior and posterior cruciate ligament, and the lateral and medial meniscus. CE certification to EN 1621-1:2012 standards is a hallmark across the lineup, giving riders confidence that performance claims are backed by independent testing.
Designed for the Complete System
Advanced materials and ergonomic designs ensure that each product adapts to the rider's body, enhancing stability without restricting movement — a critical balance for motocross and enduro athletes who need full articulation on technical terrain. Alpinestars also offers purpose-built accessories like MX Long Knee Brace Socks, specifically designed to be worn with the Alpinestars range of off-road boots and knee protection, featuring a single layer compact construction for high levels of breathability.
Whether you're a weekend trail rider or a competitive motocross racer, browsing the full knee brace category or exploring everything Alpinestars has to offer is the right place to start building a protection setup you can trust.