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Alpinestars A-4 Plasma Chest Protector, Motorcycle Body Armor, White with Black and Red Accents, Ventilated Hard Shell Design, Adjustable Side Straps, Lightweight Off-Road Protection
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A-4 Plasma Chest Protector

motocross | body protectors

£149.99
Color:Black Red White

Size:

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Description

Anatomically profiled for all forms of off-road riding, the A-4 PLASMA Chest Protector features a semi-rigid thermoplastic polyhedron design chest protector and a Nucleon PLASMA back protector that are engineered to be lightweight, breathable, comfortable, adaptive,  and protective.

Key Features

• Advanced Construction: The Nucleon PLASMA element in this protector is constructed from a bio-based viscoelastic impact-absorbing compound, with no less than 25% bio-based content and molded into a precision-engineered geometry. While the PLASMA material dissipates impact energy and significantly reduces transmitted forces through controlled material response, the low-profile PLASMA geometry is specifically developed to compress and extend with movement while supporting airflow through its channeled and highly-perforated design.
• Exceptional Comfort and Flexibility: The geometry of the protector is pliable in all directions and compresses and extends with movement, molding to the body for a close, adaptive fit.
• Lightweight and Ultra-Ventilated Chest Armor: The chest outer shell’s design is based on geodesic polyhedrons, and like a geodesic dome, less material is needed to achieve the desired structural strength and imposed load performance when compared to flat or unfaceted surfaces. This results in a protector where the whole is greater than the sum of all its parts, making the new A-4 PLASMA Chest Protector supremely lightweight and ventilated.
• Premium Comfort: The over-injected flexible side wings of the chest protector perfectly follow the body’s contours for superior comfort and freedom of movement.
• Optional Race kit: Engineered to be compatible with the Nucleon PLASMA Extended Roost Coverage kit which includes Upper and Lower Chest Extensions and an additional Y-Strap System, allowing riders to use the A-4 Chest Protector without the back protector.
• Rib and Shoulder Coverage: The A-4 PLASMA Chest Protector features highly perforated, adjustable, and detachable rib and shoulder padding for additional coverage against roost and impact.
• BNS compatible via the elasticated BNS pull tabs situated on the removable soft tactile thermoformed shoulder pads.

Protection

• According to European statutory law, the CE mark is a conformity requirement for the marketing of this product. The following standards apply:
• Back protector: EN 1621-2:2014 LEVEL 1
• Chest protector: EN 1621-3:2018 LEVEL 1

Construction

• Equipped with adjustable shoulder and side straps for an optimized performance fit.
Removable soft tactile thermoformed shoulder padding for enhanced rider comfort.
• The lining on the back protector offers a soft tactile feeling against the skin while maintaining the integral structure of the protectors and reducing the risk of any material tearing.
• The lining is ribbed for superior airflow while also reducing the amount of material that is in contact with the skin.
• The perforated 3D mesh chassis also offers additional protection against tire roost.
• Bionic Neck Support compatibility via the BNS shoulder pull tabs.

Shipping & Returns
  • Free shipping above £90
  • Free 30 day returns
SKU 8059347564814 EAN 6500526-132-ML
Alpinestars A-4 Plasma Chest Protector, Motorcycle Body Armor, White with Black and Red Accents, Ventilated Hard Shell Design, Adjustable Side Straps, Lightweight Off-Road Protection

A-4 Plasma Chest Protector

£149.99

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Frequently asked questions Hide FAQs
Is the A-4 Plasma Chest Protector CE-certified?

Yes, this chest protector meets CE certification standards for impact protection. The semi-rigid thermoplastic polyhedron chest plate and Nucleon PLASMA back protector are engineered to provide certified protection for off-road and motocross riding.

Does this chest protector include back protection?

Yes, the A-4 PLASMA includes integrated Nucleon PLASMA back protection. This provides comprehensive front and back coverage in a single, anatomically profiled unit designed specifically for off-road riding.

How does the A-4 Plasma fit under a jersey or jacket?

The A-4 PLASMA features an anatomically profiled, low-profile design that fits comfortably under motocross jerseys and off-road jackets. The lightweight construction and breathable materials ensure it doesn't add excessive bulk while maintaining full protection coverage.

Can this chest protector be worn for all types of off-road riding?

Yes, the A-4 PLASMA is engineered for all forms of off-road riding including motocross, enduro, trail riding, and off-road adventure. Its adaptive design and comprehensive protection make it suitable across different off-road disciplines and riding intensities.

Is the A-4 Plasma Chest Protector breathable for hot weather riding?

Yes, the A-4 PLASMA is specifically designed with breathability in mind. The thermoplastic polyhedron structure and Nucleon PLASMA back protector allow airflow while maintaining protection, making it suitable for warm weather off-road riding conditions.