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Alpinestars

Motorcycle stone guards A-4 Plasma

Enhance your off-road experience with the motorcycle chest protector Alpinestars A-4 Plasma, combining comfort, lightness, and advanced protection.

Starting at
€175.58 €156.83 -11%
Description +

Anatomically designed for all forms of off-road riding

  • Features a semi-rigid thermoplastic polyethylene chest protection and a Nucleon Plasma back protector, designed to be lightweight, breathable, comfortable, adaptive, and protective
  • Key features
  • Highly flexible Nucleon Plasma back protector, made from viscoelastic material created from polymers, shaped into a structure that is flexible in all directions while maintaining the ability to dissipate impact energies
  • Lightweight and highly ventilated, this protection offers strong dispersion and absorption of impact forces while ensuring maximum coverage in all riding positions
  • Lightweight and ultra-ventilated chest armour
  • The outer shell design of the chest achieves the required structural strength and performance against flat or non-faceted surfaces
  • The over-injected flexible wings of the chest protector fit the contours of the body for comfort and freedom of movement
  • Optional Race Kit - Designed to be compatible with the Nucleon Plasma extended cover kit which includes upper and lower chest extensions, and an additional Y-strap system to use the A-4 Chest without the back protector
  • Features highly perforated, adjustable, and removable rib and shoulder padding for added protection against impacts and projectiles
  • Construction
  • Equipped with adjustable shoulder and side straps for optimized performance fit
  • Soft and removable thermoformed shoulder padding for increased rider comfort
  • The back protector lining offers a soft touch against the skin while maintaining the integral structure of the protections and reducing the risk of ripping any material
  • The lining is grooved for better airflow while reducing the amount of material in contact with the skin
  • The 3D perforated mesh chassis also provides additional protection against tire debris
  • Compatible with the neck support nic via BNS pull tabs
  • Impact-absorbing, environmentally friendly, and durable material, USDA certified
  • Back protector: EN 1621-2:2014 Level 1.
  • Chest protector: EN 1621-3:2018 Level 1.
Additional information +
BrandAlpinestars
Colorblk/red/wh
ColorBlack
GenderMixed
Age groupAdult

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