Free Shipping on orders over $59**

Order Delivery despite Canada Post negotiations. See details here.

Free shipping over $59*

CUSTOMER SERVICE

1-800-665-6735 | 403-243-2636

Parts Finder
  • Find Parts
New

Alpinestars A-4 Plasma Chest Protector

$229.95
In stock
Only %1 left
Stock #
6500526
Men's Tops
Size Chest (cm) Waist (cm) Chest (in) Waist (in)
XS 79 - 84 69 - 74 31 - 33 27 - 29
S 86 - 94 76 - 81 34 - 37 30 - 32
M 97 - 102 84 - 89 38 - 40 33 - 35
L 107 - 112 91 - 97 42 - 44 36 - 38
XL 117 - 122 102 - 107 46 - 48 40 - 42
2XL 122 - 132 112 - 117 48 - 52 44 - 46

 

Men's Pants
USA Size Waist (cm) Hip (cm) Inseam (cm) Waist (in) Hip (in) Inseam (in)
28 71 - 74 86 - 89 81 28 - 29 34 - 35 32
29 74 - 76 89 - 91 81 29 - 30 35 - 36 32
30 76 - 78 91 - 94 81 30 - 31 36 - 37 32
31 78 - 81 94 - 97 81 31 - 32 37 - 38 32
32 81 - 84 97 - 99 81 32 - 33 38 - 39 32
33 84 - 86 99 - 101 81 33 - 34 39 - 40 32
34 86 - 89 101 - 104 81 34 - 35 40 - 41 32
36 89 - 94 104 - 107 81 35 - 37 41 - 42 32
38 94 - 99 107 - 112 81 37 - 39 42 - 44 32
40 99 - 104 112 - 117 81 39 - 41 44 - 46 32

 

Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.

Alpinestars A-4 Plasma Chest Protector

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. 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 A-4 Plasma Chest Protector supremely lightweight and ventilated. The Nucleon Plasma Back Protector is crafted from a USDA Certified Biobased viscoelastic material. Designed for multi-directional pliability, the protector molds to the body for a close fit, effectively dissipating impact energy to deliver reliable protection. Lightweight and highly ventilated, this protector offers strong impact force dispersion and absorption while ensuring maximum coverage area in all riding positions.

Features:

  • Lightweight and ultra-ventilated chest armor
  • Constructed from USDA certified, biobased, eco-friendly and sustainable impact absorbing material
  • Equipped with adjustable shoulder and side straps for an optimized performance fit
  • Removable soft tactile thermoformed rib and shoulder padding for enhanced comfort
  • Over-injected flexible side wings of the chest protector perfectly follow the body’s contours for superior comfort and freedom of movement
  • 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
  • Lining is ribbed for superior airflow while also reducing the amount of material that is in contact with the skin
  • Perforated 3D mesh chassis also offers additional protection against tire roost
  • Bionic Neck Support compatibility via the BNS shoulder pull tabs situated on the removable soft tactile thermoformed shoulder pads
  • Compatible with the Nucleon Plasma Extended Roost Coverage kit which includes upper and lower chest extensions and an additional Y-strap system, allowing you to use the A-4 Chest Protector without the back protector
  • 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
More Information
Gender Men
Stock # 6500526
Brand Alpinestars
Vend PR

To Top