Alpinestars Nucleaon KR-3 Back Protector (Smoke Black/Red)  £161.99

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RRP £179.99
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Only 1 In StockSmall
RRP £179.99
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Ships in 2 - 3 daysMedium
RRP £179.99
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Ships in 2 - 3 daysLarge
RRP £179.99
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Alpinestars Nucleon KR-3 Back Protector

The Nucleon range of road protection features a superb anatomical fit and comfort. Constructed with innovative protector plates which are lightweight and feature a high performance polymeric blend for protection. Featuring new, modular rib protectors for strategic protection in a vulnerable area, the Nucleon KR-3 Protector offers excellent performance under an outer leather or textile garment.


  • Back protector constructed in three waist-to-shoulder dimensions in order to cover all the body size.
  • New structured back shell plate is constructed from a high performance polymeric material blend for optimized flexibility and excellent weight-saving.
  • Protection incorporates hybrid construction with lattice shell with a new viscoelastic PU foam compound.
  • Horizontal flex channeling for adaptive fit in all riding positions.


  • Back protector CE certified to EN 1621_2:2014 LEVEL 2.
  • New single-injected lattice structure shell constructed with ergonomic design to absorb high impacts and allow maximum breathability and air flow.
  • New soft viscoelastic PU foam compound on the central spine area for fit, comfort and impact absorption.
  • Convex design on the central hard shell provides highest level of protection of the spine.
  • New adjustable rib protector constructed from a high performance polymeric material blend for additional side protection.
  • New shoulder blade padding extensions to protect the impact areas.


  • Waist adjustment for customized fit and slim vented kidney belt for added position stability and security.
  • Adjustable and detachable elastic shoulder straps via snap fit system to allow a more comfortable use of the protector.
  • Compatible with the Nucleon KR-C protector.
  • Compatible with the Nucleon KR-TB protector.
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