---
product_id: 315087389
title: "Nucleon KR-Celli Street Motorcycle Back Protector Insert (Large, Transparent Smoke)"
brand: "alpinestars"
price: "RM833"
currency: MYR
in_stock: false
reviews_count: 5
url: https://www.desertcart.com.my/products/315087389-nucleon-kr-celli-street-motorcycle-back-protector-insert-large-transparent
store_origin: MY
region: Malaysia
---

# Ultra-lightweight 0.3 kg design Max airflow with micro-cell structure CE-certified advanced protection Nucleon KR-Celli Street Motorcycle Back Protector Insert (Large, Transparent Smoke)

**Brand:** alpinestars
**Price:** RM833
**Availability:** ❌ Out of Stock

## Summary

> 🛡️ Ride smart, ride light — protection that moves with you.

## Quick Answers

- **What is this?** Nucleon KR-Celli Street Motorcycle Back Protector Insert (Large, Transparent Smoke) by alpinestars
- **How much does it cost?** RM833 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/315087389-nucleon-kr-celli-street-motorcycle-back-protector-insert-large-transparent)

## Best For

- alpinestars enthusiasts

## Why This Product

- Trusted alpinestars brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Featherweight Armor:** High-performance polymer blend delivers maximum protection without the bulk.
- • **Breathe Easy, Ride Hard:** Optimized airflow design prevents overheating during long rides.
- • **Next-Gen Energy Absorption:** Unique cell micro-structure disperses impact forces, keeping you safer on every ride.
- • **Tailored Fit for Every Rider:** Available in three sizes to ensure ergonomic protection that moves with you.
- • **Adaptive Triple-Segment Flexibility:** Articulated shell molds perfectly to your back for unmatched riding comfort.

## Overview

The Nucleon KR-Celli Street Back Protector Insert by Alpinestars is a CE-certified, ultra-lightweight polymer composite protector designed for motorcyclists seeking advanced impact absorption and ergonomic fit. Featuring a triple-segment articulated shell and innovative micro-cell structure, it offers superior flexibility, breathability, and tailored protection across three sizes, making it a top choice for serious riders prioritizing safety and comfort.

## Description

The extremely lightweight, CE-certified KR-CELLi Protector insert features an articulated back shell plate for flexibility and riding fit, plus an advanced micro-structure cell design for efficient impact energy absorption and high levels of airflow.

Review: Size M fits alpinestar rucksack - The M size fit in my alpinestar rucksack Very pleased with quality and peace of mind protection
Review: Todo correcto - Lo esperado

## Features

- The triple segmented back shell plate is constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties.
- Unique cell micro-structure designed for advanced energy absorption, adaptivity, maximum breathability and air flow.
- The ultra-lightweight Nucleon KR-CELLi Protector insert is developed in three waist-to-shoulder dimensions to cover all body sizes.
- The back protector’s structure design and structural change from center towards the outside provide the perfect balance between force dispersion and energy absorption.
- Ergonomic protection plate contours to the natural curve of the back ensuring optimum fit while riding.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FRJXMKS |
| Age Range Description | Adult |
| Best Sellers Rank | #244,136 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #3 in Dorsal Protection |
| Brand | Alpinestars |
| Brand Name | Alpinestars |
| Closure Type | Pull-On |
| Colour | Transparent smoke |
| Customer Reviews | 4.8 out of 5 stars 681 Reviews |
| Item Dimensions | 20 x 20 x 20 Centimeters |
| Item Type Name | Protector |
| Item Weight | 0.3 Kilograms |
| Item dimensions L x W x H | 20 x 20 x 20 Centimeters |
| Manufacturer | Alpinestars |
| Material | Polymer composite material |
| Material Type | Polymer composite material |
| Sport | Motorcycling |
| Sport Type | Motorcycling |
| Strap Type | Adjustable |
| Unit Count | 1 Count |
| Whats In The Box1 - Whats In The Box3 | Protectors |

## Product Details

- **Brand:** Alpinestars
- **Colour:** Transparent smoke
- **Item Weight:** 0.3 Kilograms
- **Material:** Polymer composite material
- **Sport:** Motorcycling

## Images

![Nucleon KR-Celli Street Motorcycle Back Protector Insert (Large, Transparent Smoke) - Image 1](https://m.media-amazon.com/images/I/71cnL-uR3wL.jpg)
![Nucleon KR-Celli Street Motorcycle Back Protector Insert (Large, Transparent Smoke) - Image 2](https://m.media-amazon.com/images/I/81Jg2LHqEqL.jpg)

## Questions & Answers

**Q: my current back pad is 15.25" x 11.5".  what size do i order?**
A: I have the same dimension and large is way too big to fit in the back slot.  Vertically, this item in a Large is 17 inches

**Q: What size should i buy for an alpinestars faster airflow leather jacket size 50 (euro size)?**
A: Buy Large. 
👍🏻

**Q: I did not find its size, can you tell me the size of the large, medium and small? I don't know how to choose**
A: Size	        Height	Width
Small	15	        8.75
Medium	16.75	9.5
Large	17.75	10

**Q: why dont they list the size (dimensions) instead of the package size?   Seriously??**
A: Probably  Because it comes in a small plastic bag that fits it really tight

## Customer Reviews

### ⭐⭐⭐⭐⭐ Size M fits alpinestar rucksack
*by P***S on 18 October 2025*

The M size fit in my alpinestar rucksack Very pleased with quality and peace of mind protection

### ⭐⭐⭐⭐⭐ Todo correcto
*by J***T on 14 August 2025*

Lo esperado

### ⭐⭐⭐⭐⭐ Protezione interna alla giacca
*by F***A on 1 April 2025*

Dopo anni di utilizzo di una protezione a gilet o con bretelline ho inserito questa nello spazio apposito della mia tuta Alpinestars, fit perfetto e una volta indossata non si sposta sulla schiena. Sicuramente occhio alla taglia (misura) necessaria per la vostra tutta, però lo considero un buon prodotto. Mi auguro di non testarne mai l'affidabilità nel momento del bisogno! ;)

## Frequently Bought Together

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- Alpinestars SMX-1 Air V2 Gloves, Short Cuff Fit, Leather and Mesh Construction, CE-Certified, Ergonomic Protection, Summer Riding Glove, L, Black/Yellow Fluorescent

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**Shop now:** [https://www.desertcart.com.my/products/315087389-nucleon-kr-celli-street-motorcycle-back-protector-insert-large-transparent](https://www.desertcart.com.my/products/315087389-nucleon-kr-celli-street-motorcycle-back-protector-insert-large-transparent)

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-02-02*