A-4 Plasma Roost Guard - Black/Red/White - XL/2XL
The Alpinestars A-4 Plasma Roost Guard in XL offers advanced protection designed specifically for off-road riding. This anatomically profiled armor features a semi-rigid thermoplastic polyhedron chest protector that combines structural strength with flexibility, ensuring optimal comfort and coverage during demanding rides. The highly ventilated design incorporates perforated, adjustable, and detachable rib and shoulder padding, providing customizable protection against roost and impact while maintaining excellent airflow to keep riders cool. The lightweight construction reduces fatigue without compromising safety, making it suitable for a variety of off-road disciplines.
Alongside the chest protection, the Nucleon Plasma back protector is engineered from viscoelastic, bio-based polymers that are pliable in all directions. This impact-absorbing material effectively dissipates energy upon impact, offering superior dispersion and absorption while maintaining a slim profile. The back protector's ribbed lining enhances airflow and reduces skin contact, further improving rider comfort. The armor also features over-injected flexible side wings that contour to the body for unrestricted movement, and adjustable straps ensure a secure, personalized fit. Additional features include compatibility with the optional Race Kit, which allows for extended roost coverage with upper and lower chest extensions and an optional Y-Strap System for use without the back protector.
Constructed with environmentally friendly, USDA-certified bio-based materials, the ALPINESTARS A-4 Plasma Roost Guard emphasizes sustainability without sacrificing performance. The design incorporates a perforated 3D mesh chassis that provides extra protection against tire roost and debris, while the removable, soft tactile shoulder padding enhances rider comfort during long rides. The inclusion of Bionic Neck Support compatibility via the BNS shoulder pull tabs adds an extra layer of safety for aggressive riding scenarios. Overall, this roost guard combines innovative materials, ergonomic design, and customizable features to deliver maximum protection, ventilation, and comfort for off-road enthusiasts.
Features:
- Anatomically profiled semi-rigid thermoplastic polyhedron chest protector for optimal coverage and comfort
- Highly ventilated design with perforated, adjustable, and detachable rib and shoulder padding for enhanced airflow and protection
- Nucleon Plasma back protector constructed from viscoelastic, bio-based polymers that dissipate impact energy efficiently
- Lightweight and ultra-vented construction reduces rider fatigue while maintaining strong impact force dispersion
- Over-injected flexible side wings contour to the body for unrestricted movement and comfort
- Adjustable shoulder and side straps for a customized, secure fit
- Removable soft tactile thermoformed shoulder padding for added rider comfort
- Perforated 3D mesh chassis provides additional protection against tire roost and debris
- Compatibility with optional Race Kit for extended roost coverage and versatile configurations
- Bionic Neck Support (BNS) compatibility for enhanced safety during aggressive riding
- Constructed with USDA certified bio-based impact-absorbing materials emphasizing sustainability