Name: ALPINESTARS NUCLEON KR 1 CELL PLASMA BACK PROTECTORS - TRANSPARENT SMOKE/RED/BLACK
Brand: Alpinestars
SKU: 4294-2191-03
Price: 174.95 USD
Availability: InStock

ALPINESTARS NUCLEON KR 1 CELL PLASMA BACK PROTECTORS - TRANSPARENT SMOKE/RED/BLACK

$ 174.95

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We are an Authorized Dealer for all the Brands that we sell. Below are the links to our distributors who authorize us to carry what we sell.

Helmet House is our distributor for...

SHOEI - HJC - ALPINESTARS - CORTECH - TOURMASTER - SENA - SIDI

https://helmethouse.com/dealers/4955008-motor-psycho-sport.html

Parts Unlimited - Drag Specialties - LeMans Corp is our distributor for...

ARAI - ALPINESTARS - THOR - ICON - MOOSE RACING - Z1R - SENA - DUNLOP - METZELER - FMF - MOTUL - MAXIMA - RENTHAL - YOSHIMURA - TWIN AIR - ODI - 100% - SPECIALIZED - CRANKBROTHERS - MICHELIN - AGV - FACTORY EFFEX - AFX - AND MORE!

https://www.parts-unlimited.com/find-dealer (Type in 91320 for our zip code)

Parts Unlimited is the largest powersports distributor in the United States. They are now the exclusive distributor for Arai Helmets in the U.S.. Their house brands are Icon, Moose, Thor, AMS, Z1R, Arctiva and more.

WPS - Western Power Sports is our distributor for...

ALPINESTARS MX - GAERNE - FLY RACING - ODI - FMF - SCORPION - MIKA METALS - HIGHWAY 21

https://www.wps-inc.com/dealer-locator?distance=25&location=91320

Western Power Sports or WPS is the faster growing distributor currently. Their house brands are Fly Racing and Highway 21.

Turn14 Distribution is our distributor for...

ANSWER - MSR - PRO TAPER - FMF - GAERNE - ACERBIS - ATHENA - DRAGONFIRE - CYCRA - EVS - FIRSTGEAR - SPEED & STRENGTH - GIANT LOOP - RIVER ROAD - USWE - VANCE AND HINES - WISECO

https://www.turn14.com/about

Turn14's house brands are Answer, MSR, Pro Taper, Renthal, Vance & Hines, Firstgear, and Speed & Strength.

O'NEAL & OGIO POWERSPORTS is our distributor for...

O'Neal - OGIO

O'neal doesn't have a dealer locator but we buy direct from O'Neal and also use them for OGIO Powersports as they are the U.S. distributor for OGIO POWERSPORTS. OGIO is owned by Callaway Golf.

Bell Helmets Dealer Locator

https://troyleedesigns.com/pages/store-locator (Type in 91320 Zip Code)

The Nucleon KR-1 Cell Back Protector delivers race-level safety with a lightweight, ventilated design and durable lattice shell for superior impact protection.

Constructed from a high-performance polymeric material blend
Extended lower back protector
Highly perforated for maximum breathability and ventilation
Horizontal flexion grooves for an adaptive fit
Adjustable, detachable elastic shoulder straps
Height-adjustable kidney belt with hook and loop closure
Soft Bio-Foam padded chassis
CE EN 1621-2 : 2014 Level 2

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from 676 reviews

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Gaerne sg12

Came super quick, nothing was damaged and the boots were pristine!

Austin Monarch

11/07/2025

Gaerne SG-12 Boots - White

Outstanding old school service!

This company is outstanding to work with! I ordered mx boots and the boot did not fit well so I contacted them and no hassle return for exchange and got what I needed. Highly recommend buying from this company!

Bill Rummel

11/05/2025

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👍🏻

Stuff is great and comes in time!

Anton Bykov

11/04/2025

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Gaerne sg22

Awesome boots, great price and they were delivered when promised! Definitely recommend & use Motor psycho sport for future purchases!

Jim Griffith

11/01/2025

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Shoei RF1400

Absolutely satisfied with purchase, bought as an open box discount...you could not tell that it wasn't new, would definitely buy again

Ron K

11/01/2025

Shoei RF-1400 Helmet - Gloss Basalt Gray - Size XL - USED / OPEN BOX

Rhe helmet is great and so was my buyiing experience. Will shop there again!

Robert

10/31/2025

Arai Quantum-X Helmet - Ray Black

As advertised and fast shipping.

G.H.

10/31/2025

Fasthouse Checkers Sticker

As advertised and great quality!

G.H.

10/31/2025

Z1R Helmet Shield Bag - Black

As advertised, and great quality!

G.H.

10/31/2025

Icon Hypersport Short Gloves

Shoei GT Air 3

My first Shoei helmet and it fits great. It's definitely worth the price.

Jae D

10/31/2025

Shoei GT-Air 3 Helmet - Gloss White - Size Large - USED / OPEN BOX

Best boots in the game!

Jimmy

10/30/2025

Gaerne SG-12 Boots - Black

Needed a helmet and glove upgrade, Motor Psycho Sport had great pricing. I saw an add that mentioned TR will take calls, I was skeptical, so I called and he answered the phone. I made the order right there on the spot.

I needed to exchange for a different size, which was quick and easy. Zero hassle on the return.

Shipping was fast with plenty of digital updates.

Great experience and I’ll be frequenting the site more often.

Thanks TR!

Anonymous

10/30/2025

Motor Psycho Sport

Easy process, received as advertised

My previous Sg10s lasted 10 years (with sole replacements). The buckles and straps just now started breaking off. Ordered these sg12s from Motorpsycho sport. Got to me in like 3 days, product brand new correct size. Thanks Psycho sport!

justin

10/29/2025

Gaerne SG-12 Boots - White

ALPINESTARS NUCLEON KR 1 CELL PLASMA BACK PROTECTORS - TRANSPARENT SMOKE/RED/BLACK

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