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Alpinestars Nucleon KR-Ci Chest Protector Inserts
  • Alpinestars Nucleon KR-Ci Chest Protector Inserts

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Alpinestars Nucleon KR-Ci Chest Protector Inserts Videos

Alpinestars Nucleon KR-Ci Chest Protectors

The Nucleon KR-Ci features an easy-to-use divided chest protector insert for men, certified to prEN 1621-3:2013. It is highly ventilating, very lightweight and the ergonomically designed protector is excellent for everyday riding.

Compatible with all Alpinestars jackets and race suits equipped with chest protector pockets (most Alpinestars products).  The Nucleon replaces its predecessor the "Bionic Chest Pad" and fits any product that the Bionic Chest Pad would have fit.

Product Style RevZilla Item # Manufacturer Product # Availability
XS-SM 1012239 6702115-10-XSS In Stock: Ships next business day
MD-XL 1012240 6702115-10-MXL In Stock: Ships next business day


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Alpinestars Nucleon KR-Ci Chest Protector Inserts 4.7 5 31 31
Works great with A* Viper Air Jacket After 6000 miles and one year, I'd highly recommend these inserts. They fit my A* Viper Air Jacket (small) perfectly and are extremely comfortable, almost unnoticeable. Airflow through them is great, so if you're on the fence because you're in a warmer climate, don't worry. Definitely worth it at the price point, especially since it could potentially save you a few cracked ribs. I also got the back protector insert from the same line, and I'd recommend that as well. August 17, 2016
Good armor upgrade for Alpine Stars jackets Flexible and breathable, this was easy to insert into my Alpine Star jacket to add additional chest protection. It makes me feel safer to have this add-on for my jacket. A little pricey but worth it. June 29, 2016
Falls out of Alpinestars breast pocket I purchased these inserts for my 2014 Alpinestars Gunner Jacket. While I have no doubt that the inserts will provide a higher level of protection, they do not fit my jacket well at all. The breast "pocket" holds these inserts in with three tiny pieces of velcro and often releases the inserts when I am in a tuck, taking the jacket off, or putting the jacket on. It is very annoying having to reinstall the inserts at least every other day. While I am sure they likely work better with newer or higher end Alpinestars, the non-universal (among Alpinestars jackets) fit should be noted. I should not have to sew my jacket for these to fit. June 28, 2016
Air air air! Ahhhhhh! you can just feel the air going through your chest compared to the old version! Especially now that it is summer! I really appreciate the design of the holes while I know it will protect my chest in case of a crash. I went down twice with the old version and kept my chest protected. We shall see about this one... more update to follow! hopefully.. hehe June 26, 2016
Sometimes they slide down. This may be just from jacket to jacket but in my GP-M Alpinestars jacket these sometimes slide down from their location no matter how well the velcro is secured. However, in my Viper jacket they never seem to budge. June 19, 2016
Works great in my 1 pc Aerostich Roadcrafter light After trying some 1 pc chest protectors my 1 pc Aerostich Roadcrafter light, I thought I'd try these instead...I added some velcro to these and put them in...instant success! Great airflow, comfortable, and now it's easy to put the suit on and off and not have to mess with adjusting the pads. They seem like a great pad for protection of course too. May 31, 2016
Obsortion, so you don't have to! My jacket came with foam inserts just to fill the slots. I wanted to get chest protectors to help absorb the impact, so my body doesn't have to absorb it all. The air flow on them is amazing and you don't even realize they are there. They are flexable, but they hold there shape to your chest. Great buy, can't really put a price on my safety. May 4, 2016
These chest protection inserts are great! I have an Alpine air mesh jacket and these chest protection inserts fit perfectly inside the inner zipper seem. The inserts allow a lot of air to flow through them on a hot day and they are lightweight...I totally forget I'm even wearing them. I always feel that I can never get too much protection when riding. These inserts allow me to complete the complete field of body armor from elbows, shoulder, back, and now chest. March 8, 2016
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