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Columbus
My Store
Open Today At 10am
3635 West Broad Street
Columbus, Ohio 43228
614-869-3115
What’s going on at Cycle Gear
Services
Experienced staff support available on site
Store Events
Meet the local riding community for Bike Nights & more
Shop the Store
Find out what’s in stock and ready to go
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Alpinestars A-4 Plasma Chest Protector

Engineered for the rigors of off-road endeavors, the A-4 Plasma Chest Protector stands out with its semi-rigid thermoplastic polyhedron front shield coupled with a Nucleon Plasma back protector. It emphasizes real-world application with a design that's lightweight, breathable, and conforms to the rider's body while ensuring exceptional defense against impacts. The front chest shield benefits from a geodesic polyhedron pattern that minimizes material usage while maintaining structural integrity, achieving superior strength with less material compared to flat surfaces. This ingenuity not only reduces weight but also enhances ventilation, yielding a chest protector whose parts synergize to exceed expectations. On the flip side, the Nucleon Plasma Back Protector is sculpted from a USDA Certified Biobased viscoelastic compound. It boasts adaptable flexibility, hugging the rider snugly and dissipating forces effectively during impacts. It guarantees extensive protection and cooling properties, fostering a safer and more focused off-road experience.

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
Read More
Product Style Item # Store SKU Manufacturer Product # Availability
Product Style MD-LG / Black/Red/White Item # 10467262 Store SKU 395207 Manufacturer Product # 6500526-132-ML Availability In Stock: Ships within 24 hours
Product Style XL-2XL / Black/Red/White Item # 10467263 Store SKU 395208 Manufacturer Product # 6500526-132-XLX Availability In Stock: Ships within 24 hours
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