Alpinestars Nucleon KR-2 Back Protector :: MotorcycleGear.com

Alpinestars Nucleon KR-2 Back Protector

  • The Nucleon KR-2 is a premium adventure touring/sport touring back protector
  • CE certified Level 2 (EN1621-2:2014)
  • Extremely lightweight, highly breathable and incorporating reinforced protection, this protector is optimized for comfort on longer journeys
  • An innovative fusion of energy absorbing viscoelastic memory foam with articulated vertebrae protection, the Nucleon KR-2 is flexible and ergonomically profiled for performance

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Our Price:
$139.95

Sizing Information

These back protectors are sold by your body height and here are the recommendations from Alpinestars:

Product Size Height Range
XS 4’8 3/4” – 5’4 1/2”
S 5’4 1/2” – 5’8”
M 5’8” – 5’11 3/4”
L 5’11 3/4” – 6’2 1/8”
XL 6’2 1/8” – 6’4 1/2”

Overall height varies by size, but just to give you the idea, you can click the “View Larges Images” link above to see our custom pics. Those photos were taken with the size medium back protector and our model is 5’9”.

Our Two Cents

For 2015, Alpinestars is introducing an all-new line of back and chest protection, and these are all part of the Nucleon series.

This Nucleon KR-2 is made of a flexible and pliable material and is designed for street and touring riders who want full back protection. And this unit provides CE Level 2 protection. Just for reference, Alpinestars also offers the KR-1 and KR-R protectors which are similar but are designed more for aggressive sport riding or racing, respectively. They have an additional plastic stiffener for greater crash/impact protection. The KR-2 doesn’t have that additional piece and is not as stiff and is therefore more suited to street, touring and dual sport use.

This back protector is worn on the body with a waist strap and shoulder straps and is not dependent upon snaps or other connections in Alpinestars gear.

Accessories: You can beef up the protection of this back protector by adding either a Nucleon Chest Protector Harness and/or a Tailbone Protector (see those links below).

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