Alpinestars Nucleon Flex Pro Ci Anthracite Anthracite

Product Code: 53582

5 out of 5 (1 review)

£28.49

£29.99

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The Alpinestars Nucleon KR-Ci is a high-performance, super-lightweight track and race chest protector featuring Nucleon Flex Pro Technology. Constructed from a high-performance polymeric material blend for optimised flexibility and excellent weight-saving properties, it has an ergonomic protection plate that contours to the body's natural curve, ensuring optimum fit for men and women. It boasts CE Level 2 EN 1621-3:2018 (Chest) certification. The chest protector’s structure perfectly balances force dispersion and energy absorption and is breathable. 

  • Super-lightweight
  • Nucleon Flex Pro Technology
  • Ergonomic
  • CE Level 2 EN 1621-3:2018 (Chest) certification
  • High-performance
5 out of 5 · Alpinestars Nucleon Flex Pro Ci Anthracite Anthracite
Feefo Reviews

AI summary of customer reviews

This two-piece chest armour fits well into internal armour pockets and provides good chest and rib coverage. It's relatively light and doesn't interfere with movement, though there is some bulk. Customers appreciate the level of protection and secure fit when zipped in, making it a practical addition to a jacket that's too snug for an airbag.

What customers liked

  • Good chest coverage
  • Fits well
  • Light weight
  • Secure fit

Possible concerns

  • Some bulk

Generated by AI from verified customer reviews. May not reflect every reviewer's experience.

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Alpinestars Nucleon Flex Pro Ci Anthracite Anthracite Unisex - L

Oct 8, 2026

David Henchliffe from GBR Verified Customer

Purchased this two piece chest armour for road and track use, to fit my current AlpineStars Photon Jacket and my AS one piece leathers. My jacket is bit too snug for an Airbag, so felt this was a good level of protection. Fits really well into the internal armour pockets. Good chest and rib coverage. Once jacket/suit is zipped, the gap between the two plates is closed. Some bulk, but light, and doesn’t interfere. Surprised chest armour rarely comes as standard. Ordered Thursday, arrived Friday. Well packaged. Pleased