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Description

The new Nucleon line of protectors take Alpinestars impact protection to a new level of comfort and performance for street and track use.

Alpinestars Nucleon Protectors use ‘molecular armor’ technology that hardens on impact to absorb force. The Alpinestars Nucleon series protectors are thinner, flexible, and perforated to make them lightweight and breathable.

 

Nucleon Back Protectors

Both the KR-R snap-in protector (left) and the KR-2i insert (right) are CE-certified to Level 2 for back protection, so they transmit half the impact force of a CE Level-1 protector.

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The new Nucleon line of protectors take Alpinestars impact protection to a new level of comfort and performance for street and track use.

Alpinestars Nucleon Protectors use ‘molecular armor’ technology that hardens on impact to absorb force. The Alpinestars Nucleon series protectors are thinner, flexible, and perforated to make them lightweight and breathable.

 

Nucleon Back Protectors

Both the KR-R snap-in protector (left) and the KR-2i insert (right) are CE-certified to Level 2 for back protection, so they transmit half the impact force of a CE Level-1 protector.

Alpinestars-Back-ProtectorsNucleon KR-2i

The KR-2i replaces the Bio Armor CE-Level 1 Back Protector Insert as the standard back protector upgrade for any Alpinestars jacket. The KR-2i earned a CE-Level 2 rating, but with less weight and bulk than its predecessor, adding it your jacket is a painless way to really beef up your daily protection.

The KR-2i comes in three sizes–the small size is for women’s jackets, the medium is for men’s jackets sized ‘medium’ and below, and the large protector fits jackets sized ‘large’ and above. The KR-2i fits older model jackets as well, and fits a variety of non-Alpinestars brand jackets. Bring your jacket in to try out the KR-2i and our other selection of back protectors and replacement armor.

Alpinestars-Nucleon-KR-2i-detail

  • CE-Level 2 (EN1621-2:2014) certified
  • Constructed with lightweight and flexible polyurethane impact foam
  • Anatomically contoured for comfortable fit
  • Perforations and ventilation channels promote cooling and airflow

The KR-2i is $49.99 and available in sizes small (for women’s Stella products), medium, and large.

The Alpinestars KR-1i Back Protector Insert is a step up from the KR-2i, and features a panel of lightweight, hard shell plastic (in white, below) along the central area of the protector.

Alpinestars Nucleon KR-1i Back Protector RRPP

While both the KR-2i and the KR-1i are CE-rated at the highest level for back protectors, CE-Level 2, the KR-1i provides a bit more impact absorption thanks to the addition of the hard plastic plate over the spinal area. The KR-1i* is priced at $79.95.

Nucleon KR-R

The Alpinestars Nucleon KR-R Back Protector is designed to snap into an Alpinestars suit or jacket and provide a higher level of protection for the spine, and with the addition of kidney and lumbar support. Like the KR-2i, above, the KR-R features molecular armor that hardens on impact when it’s called into action but is soft and light under normal circumstances. The KR-R also features an exo-layer of hard plastic for additional protection against impacts, and it exceeds CE-Level 2 requirements for force transmitted to the body. Still, it remains highly flexible and comfortable, and the kidney belt is height-adjustable for a personalized fit on different torsos.

Alpinestars-Nucleon-KR-R-detail

  • CE-Level 2 (EN1621-2:2014) certified
  • Snap-on system for placement inside a suit or race jacket
  • Hard shell and memory foam for maximum protection and comfort
  • Kidney belt features waist adjustment sliders
  • Lined with wicking mesh for heat management

The Alpinestars KR-R is $149.99, and available in sizes extra-small through extra-large.

 

Nucleon Chest Protectors

Alpinestars is one of the only companies to include left- and right-side pockets for individual chest protectors in their jackets. Even cooler is that Alpinestars includes those pockets in jackets all the way down their line, even extending to their budget option summer textiles. Alpinestars Nucleon KR-Ci chest protectors come in a pair, and easily replace the foam pads included with your Alpinestars jacket.

For a higher-degree of chest and sternum coverage, upper-level Alpinestars jackets come equipped to accommodate a one-piece chest protector like the Nucleon KR-CiR (below, right), rated CE-Level 2.

Alpinestars Nucleon Chest Protector KR-Ci RRPP Alpinestars Nucleon Chest Protector KR-CiR RRPP

Nucleon KR-Ci

The KR-Ci protectors are available in one Stella size for women and two sizes, XS/S and M/XL, for men. If you wear and Alpinestars jacket size 52 you should purchase the larger size; the size XS/S will correctly fit jackets size 50 and under.

KR-Ci armor is rated CE-Level 1 for chest protection (prEN 1621-3:2013) and a pair will run you $39.99. The KR-CiR* is $49.99.

 

*The KR-CiR and KR-1i protectors are not regularly stocked items at Road Rider.

 

 

 


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