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  • 15+ Years OnlineTried, tested, trusted
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15+ Years Online

We've been serving the motorcycle community for more than 15 years now and in that time we've grown to be the largest online retailer of motorcycle clothing & accessories in the UK.

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It's really simple, if you spend over £25 with us, delivery is free of charge to any mainland UK address (excluding Islands & Highlands).

200+ Top Brands

There simply isn't a better selection of biking brands anywhere in the UK and we're constantly updating every range to ensure you have the best choice available.

60,000+ Reviews

Whilst we know a bit about bikes and bike kit, the best road testers out there are our customers, real bikers, just like you. If you're looking for advice on what to buy, you'll find over 60,000 independent product reviews which we've posted, unedited, for all to see. Whether it's a question about sizing, quality or something else, our customer reviews are quite simply, the best place to start.

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If you can't be around to receive your delivery during the day, just use our click & collect option. We offer delivery to a shop local to you using the DPD Pickup network. Most pick up points are open outside of normal working hours and will keep your package so you can collect at a time to suit you.

Alpinestars Nucleon KR-3 Protector - Black / Red

Alpinestars Nucleon KR-3 Protector - Black / Red

Customer Product Reviews

5 Stars from 7 reviews

Our price $146.50 $177.90
Showing 1 - 7 of 7
Alpinestars Nucleon KR-3 Protector - Black / Red
April 27, 2020

Excellent product

Excellent fit Brilliant service Just need to be able to try on the road once lockdown all done

Alpinestars Nucleon KR-3 Protector - Black / Red
March 15, 2020

Very good

Very good back protector and as usual great service and quick delivery from sportsbikeshop , Great service

Alpinestars Nucleon KR-3 Protector - Black / Red
December 10, 2019

Excellent Product

After researching a range of different back protectors, I decided on the KR-3. It was not a disappointment. The fit is good and it is very comfortable. The back protector looks robust and of good quality. The only slight niggle is how the chest straps attach. It is the only area of the back protector that looks a little cheap.

Alpinestars Nucleon KR-3 Protector - Black / Red
June 16, 2019

Protection is good.

Good product, good protection and very confortable. Delivery was also perfect.

Alpinestars Nucleon KR-3 Protector - Black / Red
June 4, 2019

Great product

Great protection

Alpinestars Nucleon KR-3 Protector - Black / Red
June 17, 2018

Money well spent.

Great bit of kit, comfy when racing even in this warmer weather we are having. Not the cheepest but the only one I could find with kidney protection and pierce protection on spin. Also great service from Sportbikeshop as usuaul.

Alpinestars Nucleon KR-3 Protector - Black / Red
May 16, 2018

Brilliant confidence builder

I brought this back protector along with the KR-C chest protector. I would highly recommend this to anyone, fits like a glove, gives me a lot more confidence when corning hard and trying to knee drag. Best back protector I've ever worn, looks great and feels solid like it was made to last. Haven't crashed in it yet so don't know how it holds up it the department but I'm pretty confident it would protect me as designed.

PLEASE NOTE: The views and opinions expressed in the above reviews are solely those of the author and are not necessarily representative of the views of SPORTSBIKESHOP LTD.