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Alpinestars Nucleon Flex Plus Knee Armor



This item is available as a Blem/Refurb. These are items that cannot be sold as "New" merchandise and are limited to stock on hand. See the product details for a description of the product's condition.

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Alpinestars Nucleon Flex Plus Knee Armor

The Nucleon Flex Plus family of impact armor features a rider-friendly design that adapts to the contours of the rider’s body - ensuring maximum comfort and protection. Boasting a sleek, low profile shape, these protectors blend a lightweight, perforated open cell structure with Alpinestars Flex technology in an ergonomic design for maximum levels of movement on the bike. Nucleon Flex Plus Armor surpasses the impact requirements for CE Level 1 EN1621-1:2012 certification. 


  • Ergonomic design with increased flexibility
  • Open cell design ensures high levels of airflow and ventilation
  • Slim profile appears discreet when off the bike
  • Adaptive design allows conformity to the rider’s body shape
  • CE Level 1 certified 
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Product Style Item # Store SKU Manufacturer Product # Availability
Product Style SM Item # 1775217 Store SKU 679114 Manufacturer Product # 6521020-10-S Availability Available: Ships in 1-2 business days
Product Style LG Item # 1775216 Store SKU 679115 Manufacturer Product # 6521020-10-L Availability Available: Ships in 1-2 business days
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