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Alpinestars Nucleon KR-R Race Back Protector

Item: P295326

Take it to the track with the Nucleon KR-R back protector. The slim kidney belt adds security and the waist is adjustable. Read More

$149.95
Learn More

Product Details

Alpinestars Nucleon KR-R Hybrid Back Protector

The Nucleon KR-R hybrid back protector is an innovative track and race back protector that is CE certified Level 2 to the latest back protector standard revision (EN1621-2:2014). With performance cooling, flexibility and anatomical contouring, this hybrid of hard shell and energy absorbing viscoelastic memory foam is lightweight and breathable for optimized protection and comfort.

Features:

  • Waist adjustment for customized fit
  • Snap-on system to fix protector to a suit or jacket
  • Slim vented kidney belt for added security

Sizing Info:

Height (in)  Protector Size
56.75 - 64.25 XS
64.25 - 71.75 SM-MD
71.75 - 76.5 LG-XL

Product Style RevZilla Item # MFR. Product # Availability
Product Style XS RevZilla Item #1012250 MFR. Product #6505015-125-XS AvailabilityIn Stock: Ships next business day
Product Style SM RevZilla Item #1012251 MFR. Product #6505015-125-S AvailabilityIn Stock: Ships next business day
Product Style MD RevZilla Item #1012252 MFR. Product #6505015-125-M AvailabilityIn Stock: Ships next business day
Product Style LG RevZilla Item #1012253 MFR. Product #6505015-125-L AvailabilityIn Stock: Ships next business day
Product Style XL RevZilla Item #1012254 MFR. Product #6505015-125-XL AvailabilityIn Stock: Ships next business day

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Product Description
Part Numbers
Shipping & Returns
Product Description
Take it to the track with the Nucleon KR-R back protector. The slim kidney belt adds security and the waist is adjustable. Read More
Part Numbers
Tap To View Part Numbers
Shipping & Returns
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Reviews & Questions

3.9 / 5.0
14 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
5
6
0
2
1
Bang For The Buck
4.0 / 5
Protection & Durability
4.4 / 5
Features
3.8 / 5
Comfort
4.2 / 5
Style
4.0 / 5
Air Flow
4.2 / 5
Fit
Small
True
Large
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Fit
Small
True
Large
Air Flow
5 / 5
AWESOME - crash tested at 110mph.
AWESOME - crash tested -low side at 110mph. (track) slid... rolled - caught air and slammed on to my back!.

10/10

thanks Alpine stars. I'm probably still riding because of you!

Airflow is awesome compared to my older Alpine stars chest back protector.
October 6, 2016
Purchased
over 2 years ago
Ride:
2010 Kawasaki Z1000
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Air Flow
5 / 5
Great Back Protector
Very confortable when riding. You almost can´t fell it.
It adapts very well to the shape of your back.
Great air flow.
My only consern before buying it was about the snap-on system that fixes the protector to suit/jacket, because on the pictures it looks like it's facing the wrong way. But now that I have it I can see that the snap-on has a kind of cover that makes it look like it's wrong, but it's not. So if you thought this as well, don't worry I really can be attached to any Alpinestars suit or jacket that has the snap-on system.
March 25, 2015
Ride:
2010 Ducati Monster 696
Bang For The Buck
2 / 5
Protection & Durability
2 / 5
Features
2 / 5
Comfort
4 / 5
Style
4 / 5
Fit
Small
True
Large
Air Flow
4 / 5
Avoid Snap design...get a normal back protector
The actual back protector and waist strap are great. But the snap-on system is pretty weak connection. Mine broke after 3 uses and was replaced by Alpinestars. It makes getting into a 1-piece suit even more of a chore. you cannot snap it in place afterwards as you won't have the range of motion needed.

I requested they send me the one with the straps instead...but they sent me another KR-R. I guess I'll give them another call. I'm not going to be stuck with this thing.
June 27, 2017
Purchased
1 year ago
Bang For The Buck
4 / 5
Protection & Durability
5 / 5
Features
3 / 5
Comfort
5 / 5
Style
2 / 5
Fit
Small
True
Large
Air Flow
3 / 5
Snap velcro issues
I purchased this for my new Astar one piece, this year.
Great protection, ventilation is good as well. Comfort you really wont even know its there, at the start
The problem is the snap Velcro- feature what a pain in the ass.
Snap it in, get into the suit a few hours passes, it separates itself from the Velcro. Slides down your backside and becomes irritating, bending and flexing forward, I
Next option- attempt to place on first then put the waist settings high-works for awhile- a few hours-walking/sitting around waiting for the next run, it slides down as well.
I even put a needle and thread to it, to keep the placement on the removal inner suit of the suit. Same result, last longer but still separates and slides down your back.

Unit will protect your back side but the installation is wrong, not designed for a race suit.
April 16, 2017
Purchased
1 year ago
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Air Flow
4 / 5
Great Upgrade
Got this to upgrade the cheap foam padding in the Alpinestars T-GP Plus Air Jacket, which I only wear when hot & humid or used by wife & kids when riding 2Up. Also bought the Alpinestars Nucleon KR-Ci Chest Protector and it's amazing how beefy the jacket feels now, air flow is still great
May 18, 2015
Ride:
2013 BMW F800GT
Bang For The Buck
4 / 5
Protection & Durability
4 / 5
Features
4 / 5
Comfort
5 / 5
Style
4 / 5
Air Flow
5 / 5
Can't even tell it's there.
I wear this inside my Alpinestars race suit and can't even tell I have it on when I'm riding on the track. It's comfortable and conforms right to your back. I've warn it on several 85-95 degree track days and I didn't notice it making me any hotter or feeling like I wanted to take it off, it just felt like part of the suit (good air flow). Hopefully I never have to experience how good it is in a crash.
September 28, 2015
Ride:
2005 Kawasaki Ninja ZX-6RR
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Fit
Small
True
Large
Air Flow
5 / 5
Comfortable
I got this back protector to fit into my Alpinestars Celer jacket and it works great with it. Fits comfortably and the venting keeps it reasonably cool on your back.
May 25, 2016
Purchased
over 2 years ago
Ride:
1995 BMW R100RT
Bang For The Buck
4 / 5
Protection & Durability
4 / 5
Features
4 / 5
Comfort
4 / 5
Style
4 / 5
Air Flow
5 / 5
All in all a good product.
Haven't got anything bad to say about it. Does what it's meant to do and gives you that comfort and piece of mind. In the back of your head you know you've got an extra bit of safety if you bin it.
June 15, 2015
Ride:
2010 Yamaha YZF-R6
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
3 / 5
Comfort
4 / 5
Style
5 / 5
Fit
Small
True
Large
Air Flow
4 / 5
Great Under a Race Suit
Used with my older Alpinestars Race Suit. The suit doesn't have the button-style snap system that this back protector uses at the top, but I was able to loop the snap through the part of the suit that you use to hang it from, and it works just fine. I wore this continuously for about 7 hours and it was quite comfortable. Sometimes you notice it when it gets caught on your underwear if you stand up a certain way, but other than that, I barely noticed it.

The protector itself is very nicely made and conforms well to a variety of tucked positions while on the track. I do wish that the back protector had a second strap higher up to wrap around your chest area, but I think other models have that. Not a cheap piece, but for the amount of money I spend to go to the track, this is a crucial piece of gear and not very expensive by comparison.
November 30, 2017
Purchased
5 months ago
Bang For The Buck
4 / 5
Protection & Durability
4 / 5
Features
4 / 5
Comfort
4 / 5
Style
4 / 5
Air Flow
4 / 5
Makes me feel protected
It might seem weird to some, but this makes me feel protected. Im aware of it, without it being intrusive, but you do kinda forget that its there, but you dont completely.

it gives you an added layer or confidence, and safety, literally.

its a back protector, so who cares about style, comfort and protection are more important and its comfortable, its full of holes so air flows nicely.

I just wish it had shoulder straps too, I have it clipped to lining of jacket, but for me the only thing missing is shoulder straps.

Ive never bothered with a back protector before, until a friend had an accident, and he wasn't wearing one, he damaged his back, if only he had. It might seem expensive, but medical bills are more expensive, and painful and can be avoided... hopefully.
May 24, 2016
14 Customer Reviews
14 4/5
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13 Questions & 14 Answers
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