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Alpinestars Nucleon KR-R Back Protector

Alpinestars Armor & Protection Item #207339
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The Nucleon KR-R hybrid back protector is an innovative track and race back protector which is CE-certified Level 2 to the latest back protector standard revision (EN1621-2:2014).


  • Performance cooling, flexibility and anatomical contouring
  • Hybrid of hard-shell and energy absorbing viscoelastic memory foam is lightweight and breathable for optimized protection and comfort
  • Waist adjustment for a customized fit
  • Snap-on system to fix protector to a suit or jacket
  • Slim, vented kidney belt for added security
  • CE-certified Level 2 (EN1621-2:2014)
Prop 65 Warning Image
WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.
For more information go to P65Warnings.ca.gov