--- product_id: 172147442 title: "WORKER 18KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500)" brand: "worker" price: "₹ 1852" currency: INR in_stock: true reviews_count: 12 url: https://www.desertcart.in/products/172147442-worker-18kg-upgrade-spring-silver-for-nerf-rival-kronos-xviii store_origin: IN region: India --- # Boosts shooting range & speed Stainless steel durability 18KG tension power WORKER 18KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) **Brand:** worker **Price:** ₹ 1852 **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade your Nerf Rival Kronos and dominate the battlefield with power and precision! ## Quick Answers - **What is this?** WORKER 18KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) by worker - **How much does it cost?** ₹ 1852 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/172147442-worker-18kg-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 - • **Customizable Accuracy:** Fine-tune your Kronos blaster for pinpoint shots - • **Precision Engineering:** Crafted from premium stainless steel for long-lasting performance - • **Lightweight Yet Robust:** Only 17.43g for enhanced blaster agility without added bulk - • **Skill-Driven Installation:** Challenge yourself with a hands-on upgrade experience - • **Unleash Maximum Firepower:** 18KG spring tension for elite ball speed and range ## Overview The WORKER 18KG Upgrade Spring in sleek silver is a high-tension stainless steel replacement spring designed exclusively for the Nerf Rival Kronos XVIII-500. It significantly enhances shooting range and ball speed, requiring manual installation and adjustment for optimal accuracy. Lightweight and durable, this upgrade demands some mechanical skill, making it perfect for enthusiasts eager to elevate their blaster’s performance and stand out in competitive play. ## Description Model: W0336 Color: Silver Material: Stainless Steel Product Size: 22 x 120mm, Wire Diameter 2mm Product Weight: 17.43g Packing Size: 50 x 190mm Package Weigh: 19.66g Package included: 1x Spring Set ## 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 | |---------------|-------| | Age Range Description | Teen | | Asin | B07S917BVH | | Best Sellers Rank | #336,135 in Toys & Games (See Top 100 in Toys & Games) #1,108 in Toy Foam Blasters | | Brand Name | WORKER | | Color | Silver | | Customer Reviews | 4.2 4.2 out of 5 stars (201) 4.2 out of 5 stars | | Educational Objective | Develop basic mechanical skills and hand-eye coordination through assembly and use | | Indoor Outdoor Usage | Outdoor | | Item Dimensions | 4.7 x 0.8 x 0.8 inches | | Manufacturer | WORKER | | Manufacturer Maximum Age Months | 168 | | Manufacturer Minimum Age Months | 168 | | Manufacturer Part Number | JGCWorker-959343 | | Material Type | Stainless Steel | | Model Number | JGCWorker-959343 | | Number Of Packs | 1 | | Number Of Players | 1-2 | | Operation Mode | Manual | | Power Source | Hand-powered | | Set Name | Spring Set | | Size | 18 KG | | Supported Battery Types | No batteries required | | Theme | Nerf Rival | | Unit Count | 1 Count | ## Images ![WORKER 18KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Image 1](https://m.media-amazon.com/images/I/41RDQOfUU3L.jpg) ![WORKER 18KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Image 2](https://m.media-amazon.com/images/I/51vrdnKWA4L.jpg) ![WORKER 18KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Image 3](https://m.media-amazon.com/images/I/31ehmZVZTIL.jpg) ![WORKER 18KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Image 4](https://m.media-amazon.com/images/I/41nkEVJQdIL.jpg) ![WORKER 18KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - Image 5](https://m.media-amazon.com/images/I/317SACZtpKL.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 on Reviewed in the United States 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. ### ⭐⭐⭐⭐⭐ Super Powerful Spring *by on Reviewed in the United States January 26, 2024* First off, those who say it doesn’t fit; you all need to learn how to modify your blasters. That or just stop, because obviously you are going to hurt yourselves.Upgrading the spring does take a lot of work but it does fit. You need to manually prime the spring and lock it in place outside of the blaster. For a good guide, look up Captain Xavier’s videos on how to put a Kronos back together.The people who say it is hard to prime are correct. The 18kg spring is harder to prime than the venerable k25 spring. You also get higher FPS as a result. That said, to prime this sucker, you are going to want to install a T-bar. While Worker sells an aluminum one, i recommend the 3D printed one made by SMEnterprises on Etsy. No shell cutting requires (unlike the Worker brand) and it is sturdy enough to prime the blaster.Expect ranges up to 165 FPS with this spring. ### ⭐⭐⭐⭐ Does as advertised, too much for this blaster *by on Reviewed in the United States 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 18KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) - 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.in/products/172147442-worker-18kg-upgrade-spring-silver-for-nerf-rival-kronos-xviii](https://www.desertcart.in/products/172147442-worker-18kg-upgrade-spring-silver-for-nerf-rival-kronos-xviii) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-08-10*