---
product_id: 157151396
title: "WORKER 14KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Blaster Upgrade - 1x Spring Set"
brand: "worker"
price: "240 DH"
currency: MAD
in_stock: true
reviews_count: 8
category: "Worker"
url: https://www.desertcart.ma/products/157151396-worker-14kg-upgrade-spring-silver-for-nerf-rival-kronos-xviii
store_origin: MA
region: Morocco
---

# Enhanced shooting range & speed 14KG draw weight - serious power boost Precision install - skill required WORKER 14KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Blaster Upgrade - 1x Spring Set

**Brand:** worker
**Price:** 240 DH
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your Kronos, dominate the arena!

## Quick Answers

- **What is this?** WORKER 14KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Blaster Upgrade - 1x Spring Set by worker
- **How much does it cost?** 240 DH with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ma](https://www.desertcart.ma/products/157151396-worker-14kg-upgrade-spring-silver-for-nerf-rival-kronos-xviii)

## Best For

- worker enthusiasts

## Why This Product

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

## Key Features

- • **Childproof Power:** Increased priming effort adds a layer of safety, making it less suitable for kids but perfect for serious players.
- • **Transform Your Game:** Feel the satisfying knockdown impact and stand out in every Nerf battle with this elite upgrade.
- • **Precision Engineering:** Crafted from durable stainless steel for consistent, high-performance shots.
- • **Skill-Driven Installation:** Designed for experienced modders—install with care to optimize accuracy and safety.
- • **Unleash Maximum Firepower:** Upgrade your Nerf Rival Kronos with a 14KG spring for explosive ball speed and range.

## Overview

The WORKER 14KG Upgrade Spring is a high-tension stainless steel spring designed exclusively for the Nerf Rival Kronos XVIII-500. It significantly boosts shooting range and ball speed, delivering a powerful performance upgrade. Installation requires technical skill and patience, making it ideal for experienced modders seeking to elevate their blaster’s impact and precision.

## Description

DESCRIPTION 1.Compatible with Nerf Rival Kronos XVIII-500 2.100% New and high quality. 3.It can promote shooting range and dart speed. 4.This spring is only for Nerf Blaster toy,All parts are separate,and the product included small parts, you need to install and assemble your blaster,Please be careful installing the parts to avoid damage to your Blaster! 5.Blaster not included! SPECIFICATIONS Model: W0335 Color: Silver Material: Stainless Product size (mm): 22*120mm, wire diameter 1.8mm Packing size (mm): 50*190mm in bags PACKAGE INCLUDED 1x Spring Set

Review: This 18 kg spring will work You just need to be skilled. - 18 kg of power, this is a fantastic way of boosting your blaster it is definitely slightly longer than the stock spring. I read a bunch of reviews prior to this purchase saying that this spring is impossible to put in to this blaster. That is not the actual deal behind that You just have to be very careful and have the time and patience and the skill to compress that spring before reinserting it back into the blaster. Definitely need to be on a solid table plunger side down spring on top and have considerable weight to lock it into place. That being said you should have some knowledge on how to break down any particular item that you're working with. I would suggest to people that who are doing so don't let anybody that is not experienced to be working or replacing a spring that heavy. This is not something for children to try with their parents if anything keep them out of distance because that spring definitely has some built up kinetic energy when compressing. I would also suggest not to let any children play with this blaster after installing that particular spring. It is also harder to prime which is not a bad thing. Kind of makes it even more child proof then before. There is definitely a considerable difference. It has such great knockdown power that when I say knock down power there was a difference of sound and impact when I had used it at the same footage that I did with the stock spring from a light tap sound on the wall to a heavy loud thud sound. I wish I had made a video for this that would have been totally impressive to show that you can use that spring in a Kronos blaster. You do not need to make any cuts you just need to have time patience and some weight behind it and not be afraid to be hit by a spring if it does get released because it is a possibility that if you do not correctly handle the spring while pre-priming it before putting it back into the blaster it can rock you a little bit and not being said I've worked around spring before and it can rock you and take you to the hospital. But I'm not here to just diss encourage anybody but to encourage doing so buy using some common sense and some safety glasses.
Review: Fits Viper s200s - Works perfect with the ZWQ s200s. Draw weight is manageable. Probably not for children.

## Features

- Compatible with Nerf Rival Kronos XVIII-500 only.
- Promote shooting range and ball speed, but need to adjust the blaster's accuracy by yourself.
- Installing this spring for Kronos requires the player to have some skill level, or learn how to install it by watching a tutorial video.
- After installation, the load will be very laborious. Please check whether the parts are installed correctly before installing the screws.
- Blaster not included!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07SFD6D7R |
| Age Range Description | Kid |
| Best Sellers Rank | #201,187 in Toys & Games ( See Top 100 in Toys & Games ) #810 in Toy Foam Blasters |
| Brand Name | WORKER |
| Customer Reviews | 4.2 out of 5 stars 198 Reviews |
| Educational Objective | Game, play |
| Manufacturer | WORKER |
| Manufacturer Maximum Age (MONTHS) | 144 |
| Material Type | Stainless |
| Operation Mode | Manual |
| Power Source | manual winding |
| Size | 14 KG |
| Supported Battery Types | No batteries required |
| Theme | Fantasy |
| Unit Count | 1.0 Count |

## Images

![WORKER 14KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Blaster Upgrade - 1x Spring Set - Image 1](https://m.media-amazon.com/images/I/51zkoZxL-3L.jpg)
![WORKER 14KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Blaster Upgrade - 1x Spring Set - Image 2](https://m.media-amazon.com/images/I/61A9oBn4lPL.jpg)
![WORKER 14KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Blaster Upgrade - 1x Spring Set - Image 3](https://m.media-amazon.com/images/I/51j69kByjPL.jpg)
![WORKER 14KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Blaster Upgrade - 1x Spring Set - Image 4](https://m.media-amazon.com/images/I/61CVU8LIfrL.jpg)
![WORKER 14KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Blaster Upgrade - 1x Spring Set - Image 5](https://m.media-amazon.com/images/I/61jKpyXc1iL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This 18 kg spring will work You just need to be skilled.
*by M***. on July 22, 2025*

18 kg of power, this is a fantastic way of boosting your blaster it is definitely slightly longer than the stock spring. I read a bunch of reviews prior to this purchase saying that this spring is impossible to put in to this blaster. That is not the actual deal behind that You just have to be very careful and have the time and patience and the skill to compress that spring before reinserting it back into the blaster. Definitely need to be on a solid table plunger side down spring on top and have considerable weight to lock it into place. That being said you should have some knowledge on how to break down any particular item that you're working with. I would suggest to people that who are doing so don't let anybody that is not experienced to be working or replacing a spring that heavy. This is not something for children to try with their parents if anything keep them out of distance because that spring definitely has some built up kinetic energy when compressing. I would also suggest not to let any children play with this blaster after installing that particular spring. It is also harder to prime which is not a bad thing. Kind of makes it even more child proof then before. There is definitely a considerable difference. It has such great knockdown power that when I say knock down power there was a difference of sound and impact when I had used it at the same footage that I did with the stock spring from a light tap sound on the wall to a heavy loud thud sound. I wish I had made a video for this that would have been totally impressive to show that you can use that spring in a Kronos blaster. You do not need to make any cuts you just need to have time patience and some weight behind it and not be afraid to be hit by a spring if it does get released because it is a possibility that if you do not correctly handle the spring while pre-priming it before putting it back into the blaster it can rock you a little bit and not being said I've worked around spring before and it can rock you and take you to the hospital. But I'm not here to just diss encourage anybody but to encourage doing so buy using some common sense and some safety glasses.

### ⭐⭐⭐⭐⭐ Fits Viper s200s
*by K***K on March 17, 2025*

Works perfect with the ZWQ s200s. Draw weight is manageable. Probably not for children.

### ⭐⭐⭐⭐ Does as advertised, too much for this blaster
*by V***D on June 13, 2024*

Product does as advertised and replaces stock spring, but then becomes nearly impossible to prime. Bought this to revive a blaster with a weak spring, ended up going with a stock spring and spacer. YMMV

## Frequently Bought Together

- WORKER 14KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Blaster Upgrade - 1x Spring Set
- Nerf Rival 50 Accu-Round Refill Pack

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ma/products/157151396-worker-14kg-upgrade-spring-silver-for-nerf-rival-kronos-xviii](https://www.desertcart.ma/products/157151396-worker-14kg-upgrade-spring-silver-for-nerf-rival-kronos-xviii)

---

*Product available on Desertcart Morocco*
*Store origin: MA*
*Last updated: 2026-02-23*