Alpinestars Nucleon KR-2i Back Insert Black

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The Alpinestars Nucleon KR-2i Back Insert is a soft insert that is extremely lightweight and flexible with an ergonomic fit. It is really quick and easy to fit, offers great breathability and provides the ultimate in safety.

$69.95 inc GST

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Browse Riding Gear | Browse Armour | Browse Back Protectors

Black Alpinestars Nucleon KR-2i Back Insert

The NUCLEON KR-2i soft back protector is quick and convenient to insert and fit unobtrusively within a rider’s jacket or suit for the ultimate in comfort and safety protection.


  • Construction is lightweight, flexible PU injected impact foam
  • Contoured for anatomical and adaptive fit
  • Perforated for breathability and comfort
  • Channel ventilation system for optimized airflow
  • NUCLEON KR-2i Back Protector Insert is CE certified Level 2 (EN1621-2:2014) protection


  • Small = 15.5 x 9.5 inches, Medium = 16.5 x 10 inches, Large 17.5 x 10.5 inches

Additional information

Size Armour Adults

Small, Medium, Large

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