Name: ALPINESTARS NUCLEON KR 1 CELL PLASMA BACK PROTECTORS - TRANSPARENT SMOKE/RED/BLACK
Brand: Alpinestars
SKU: 4294-2191-03
Price: 219.95 USD
Availability: InStock

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

$ 219.95

No Sales Tax! Except CA | 🚚 Free Shipping on orders over $50

In stock, ready to ship
Out of Stock

Quantity

Authorized Dealer

No Sales Tax, except California

90 Day Free Returns & Exchanges

Free & Fast Shipping U.S. Lower 48

Earn 5% Ride Rewards on every purchase

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

[{"id":41775369945191,"title":"XS","option1":"XS","option2":null,"option3":null,"sku":"4294-2191-03","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"ALPINESTARS NUCLEON KR 1 CELL PLASMA BACK PROTECTORS - TRANSPARENT SMOKE\/RED\/BLACK - XS","public_title":"XS","options":["XS"],"price":21995,"weight":0,"compare_at_price":21995,"inventory_quantity":7,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":41775367946343,"title":"S","option1":"S","option2":null,"option3":null,"sku":"4294-2191-04","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"ALPINESTARS NUCLEON KR 1 CELL PLASMA BACK PROTECTORS - TRANSPARENT SMOKE\/RED\/BLACK - S","public_title":"S","options":["S"],"price":21995,"weight":0,"compare_at_price":21995,"inventory_quantity":18,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":41775367979111,"title":"M","option1":"M","option2":null,"option3":null,"sku":"4294-2191-05","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"ALPINESTARS NUCLEON KR 1 CELL PLASMA BACK PROTECTORS - TRANSPARENT SMOKE\/RED\/BLACK - M","public_title":"M","options":["M"],"price":21995,"weight":0,"compare_at_price":21995,"inventory_quantity":12,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":41775368011879,"title":"L","option1":"L","option2":null,"option3":null,"sku":"4294-2191-06","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"ALPINESTARS NUCLEON KR 1 CELL PLASMA BACK PROTECTORS - TRANSPARENT SMOKE\/RED\/BLACK - L","public_title":"L","options":["L"],"price":21995,"weight":0,"compare_at_price":21995,"inventory_quantity":20,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":41775368044647,"title":"XL","option1":"XL","option2":null,"option3":null,"sku":"4294-2191-07","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"ALPINESTARS NUCLEON KR 1 CELL PLASMA BACK PROTECTORS - TRANSPARENT SMOKE\/RED\/BLACK - XL","public_title":"XL","options":["XL"],"price":21995,"weight":0,"compare_at_price":21995,"inventory_quantity":19,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]}]

Let customers speak for us

from 736 reviews

Excellent product

Excellent product in pristine condition

Landy Acosta Gonzalez

01/10/2026

Shoei RF-1400 Helmet - Matte Blue - Size Large - USED / OPEN BOX

Wonderful jacket!

My son loved this jacket. Such quick shipping and a perfect fit! Thank you so much!

Jennifer Jeffords

01/09/2026

Alpinestars T-Sp X Superair Jacket

O'Neal Sierra Helmet R Black/Gray

Dennis Petty

O’Neal helmet

Just got my new helmet. Arrived quickly and fits great. 5 star service.

Brant Olson

01/07/2026

O'Neal 5 SRS Warhawk V.24 Helmet Red

Great helmet at a great price!

Dennis

Shoei Neotec 3 Anthem Modular Helmet - TC-3

Great response and shipping.

Rocky

01/06/2026

Gaerne SG-22 Boots - Black

Shoei X-15 Helmet - White - Size XL - USED / OPEN BOX

Mark Prior

01/03/2026

Shoei X-15 Helmet - White - Size XL - USED / OPEN BOX

Shoei Neotec 3 Modular Helmet - Gloss White - Size Large - USED / OPEN BOX

Chris A Comly

01/02/2026

Shoei Neotec 3 Modular Helmet - Gloss White - Size Large - USED / OPEN BOX

Alpinestars Tech 10 Supervented Boots - Night Navy/White/Rainbow - CLEARANCE

Kayla Burgett

Chest protector

Absolute perfect fit if I need another one I'll be ordering from you only problem was I ordered black and you sent me a yellow and blue one it's okay though

Glenn