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Alpinestars Nucleon KR-Ci Chest Protector Inserts

Item: P295319

Take two Alpinestars Nucleon KR-Ci Chest Protector Inserts, pop 'em in your Alpinestars-appropriate jacket. Boom. Done. Protect those ribs. Read More

$39.95
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Product Details

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

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Product Description
Take two Alpinestars Nucleon KR-Ci Chest Protector Inserts, pop 'em in your Alpinestars-appropriate jacket. Boom. Done. Protect those ribs. Read More
Part Numbers
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Reviews & Questions

4.7 / 5.0
40 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
31
8
0
1
0
Bang For The Buck
4.5 / 5
Protection & Durability
4.8 / 5
Features
4.4 / 5
Comfort
4.8 / 5
Style
4.5 / 5
Air Flow
4.5 / 5
Fit
Small
True
Large
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
4 / 5
Comfort
5 / 5
Style
4 / 5
Air Flow
5 / 5
If you fall down, go boom...it won't hurt as much.
Zup Zilla Nation,
This is my overview of the new Nucleon KR-Ci, CE 1, chest insert from Alpinestars.
Note that most of this overview is compared straight up to the A*’s Bionic chest inserts, which I have in both my Tech-1R and GP Tech Air leather jackets.

Ok, on with it.
First off the packaging is kinda pimp I would have to say. A two sided heavy “zip-lock” type bag that you can reuse for other motorcycle type things.

Sizing:
As you probably already know they come in two sizes, XS-S and M-XL, to best fit the application you are looking for. I currently own both sizes. Why? Well I wear a 48 Eu/ 38 US in just about all Alpinestars(for a “Race Fit”) and have always upgraded my chest pad with the Bionic chest armor. I followed Anthony’s size description and ordered a set of XS-S for jacket size 50EU and under. I got it and found them to be smaller then the stock foam and the Bionic chest inserts. They fit pretty good in the armor pockets, and very comfy, but they moved around more then I wanted them to. Now note, on me and my Alpinestars GP Tech Air jacket, it still covered most of my lowers chest and wrapped around my ribs which was fully covered. I was just so used to more coverage over the upper chest I wanted to know if the M-XL would fit better. Hi-Viz helped me out, with epic service like always, and I got a set of M-XL that fit the armor pocket perfectly. The Nucleon M-XL are the exact same shape and size of the stock foam and the A’s Bionic chest inserts. So if your looking for a straight up swap for the stock chest foam or the Bionic chest the size you will want is the M-XL.

Feel:
They mold to the shape of your body like the OEM foam, but give you the added protection and a new CE1 rating. I think they weight maybe a little less then the Bionic inserts. And there is much more air flow compared to the Bionic chest...I mean it’s like night and day...you have a fan on your bare chest kind of air flow. So if you don’t want to feel it at all and you your 50EU/40US then get the XS-S. If you don’t mind a little bulge and you can kinda feel it then get the M-XL. Both will fit and do the job in your jackets.

Looks:
In my jackets, with the XS-S and a Knox Ageis back protector, you can’t even feel or see it from the outside of the jacket. With the M-XL, you can see a very slight smooth lump from the edges...just thought I would add this if that sort of thing bothers you.

Overall, I really like it. It feels really good and the air flow is great. I used the XS-S pair as replacement hip armor in my A*s V-twin leather pants.

Hope this helps...Ride Safe,
MikeyD

Photo included is of the stock foam and the Nucleon M-XL.
April 9, 2015
Ride:
2011 Kawasaki Ninja ZX-10R
Bang For The Buck
4 / 5
Protection & Durability
4 / 5
Features
4 / 5
Comfort
5 / 5
Style
5 / 5
Fit
Small
True
Large
Air Flow
5 / 5
Bigger
i put it in my Alpinestars T-GP R Air Jacket and it feels kind of loose in the jacket, thought it might have been a tighter fit, still useful, my boobies went up a cup size
October 26, 2015
Purchased
over 2 years ago
Ride:
2015 Kawasaki Ninja ZX-6R ZX636
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Air Flow
5 / 5
Chest Protection
I upgraded the chest padding in my AStar Jaws perf jacket with the KR-CI protector. I like how the material molds to your body I can barely notice that it is in my jacket.
October 22, 2015
Ride:
2015 Ducati Monster 821
Bang For The Buck
4 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Fit
Small
True
Large
Air Flow
4 / 5
Not sure why these don't come standard
These are great. They give me more confidence that if anything happens, I have a bit more protection for what it's worth. And I'll take it. I have three different Alpinestars jackets and I've swapped these out on all of them. I feel these should be standard from AStars instead of the crap foam inserts that come instead.
May 25, 2017
Bang For The Buck
3 / 5
Protection & Durability
5 / 5
Features
3 / 5
Comfort
5 / 5
Style
4 / 5
Fit
Small
True
Large
Air Flow
5 / 5
Great Upgrade
Ordered these in a XS-SM to replace the chest foam in my 2014 GP-R. Slightly smaller than the foam, but definitely more durable. I don't think the size would be an issue, but if you feel like you need that little bit of extra coverage, I would get the next size up. It will still fit.

You can't even feel these in the jacket. Small price to pay for peace of mind.
August 14, 2015
Ride:
2006 Honda CBR600RR
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Air Flow
5 / 5
Can't tell when it's there, can when it is not!
I am happy I went with the advice somebody else on here gave about going with the MED-XL insert regardless of size chart because that is what the stock size pad was. Fit is very snug inside of my GP Plus R Perf jacket and the high ventilation is very noticeable! What really shines is the level of protection I can feel inside of the jacket when you 'test' the area yourself, yet I forgot it is even there when I am wearing it 10 minutes later. Must have for ANY Alpinestars jacket.
May 15, 2015
Ride:
2009 Kawasaki Ninja 650R
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Fit
Small
True
Large
Air Flow
5 / 5
Great chest protection
Bought theses to upgrade the chest protection in my A* GP Plus R jacket. Ordered the large size and they fit perfectly in the chest pockets of the jacket.
August 29, 2015
Ride:
2015 Ducati Monster 821
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Air Flow
5 / 5
MD-XL fits in large Alpinestars T-Jaws Air jacket
MD-XL fit just fine in my large Alpinestars T-Jaws Air jacket. Fairly slim inserts but definitely makes the chest area just a bit more snug.
March 2, 2016
Ride:
2015 Honda CB500F
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Comfort
5 / 5
Fit
Small
True
Large
Air Flow
5 / 5
I use these in my Alpinestars Viper AIr jacket and my Dainese Tempest D-Dry Jacket. They have a nice flex to them so they don't ever feel in the way.
October 1, 2016
Purchased
1 year ago
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Fit
Small
True
Large
Nice product
As expected. No problems. Fits well in my Alpinestar jacket.
November 25, 2016
Purchased
1 year ago
40 Customer Reviews
40 4.5/5
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9 Questions & 11 Answers
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