---
product_id: 43502063
title: "StratoLauncher IV Water Rocket Launcher + StratoFins"
brand: "relationshipware"
price: "$U6660"
currency: UYU
in_stock: true
url: https://www.desertcart.uy/products/43502063-stratolauncher-iv-water-rocket-launcher-stratofins
store_origin: UY
region: Uruguay
---

# Easy assembly 350 ft launch 125 PSI valve StratoLauncher IV Water Rocket Launcher + StratoFins

**Brand:** relationshipware
**Price:** $U6660
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your Playtime with the StratoLauncher IV!

## Quick Answers

- **What is this?** StratoLauncher IV Water Rocket Launcher + StratoFins by relationshipware
- **How much does it cost?** $U6660 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/43502063-stratolauncher-iv-water-rocket-launcher-stratofins)

## Best For

- relationshipware enthusiasts

## Why This Product

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

## Key Features

- • **STEM Ready:** Fully upgradeable for educational and entertaining experiences.
- • **Quick Setup:** Assemble in minutes and get ready for liftoff!
- • **Safety First:** Equipped with a 125 PSI safety valve for worry-free fun.
- • **Launch to New Heights:** Propels soda bottles over 350 ft into the sky!
- • **Versatile Compatibility:** Supports various soda bottle sizes from 0.5L to 2L.

## Overview

The Relationshipware StratoLauncher IV is an innovative water rocket launcher designed for easy assembly and maximum fun. With a robust 125 PSI safety valve, it can launch standard 2-liter soda bottles over 350 feet into the air. This kit includes the Gen 4 StratoLauncher, StratoFins for enhanced aerodynamics, and a fill funnel, making it perfect for STEM education and outdoor entertainment. Compatible with various bottle sizes, it promises an exhilarating experience for all ages.

## Description

StratoLauncher IV Water Rocket Launcher + StratoFins

## Features

- Easy to assemble metal water rocket launcher with a 125 PSI safety valve. Rocket will NOT fly straight without an aerodynamic nose cone made from a second soda bottle and use only 1 cup (200 ml) of water.
- Kit includes our Gen 4 StratoLauncher + StratoFins (screw-on water rocket fins) + fill funnel. Watch assembly video on this listing at the end of the pictures.
- StratoLauncher IV will propel a 2 liter plastic (PET) soda pop bottle over 350 ft. in the sky. Watch the last minute of the assembly video for launch procedure.
- Supports most .5L, 1L, 1.25L, 1.5L, 2L soda bottles @ air pressures as low as 15 PSI up to 120 PSI.
- Kit is fully upgradeable, expandable, & can be accessorized into a complete launching system for STEM.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Package Dimensions L x W x H | 9.88 x 7.24 x 2.32 inches |
| Package Weight | 1.02 Kilograms |
| Item Dimensions  LxWxH | 8 x 7 x 10 inches |
| Item Weight | 2 Pounds |
| Brand Name | Relationshipware |
| Country of Origin | United States |
| Color | Black |
| Material | Aluminum, stainless steel, brass, ABS plastic |
| Manufacturer | Relationshipware |
| Part Number | LCR-5 |
| Style | Standard |

## Images

![StratoLauncher IV Water Rocket Launcher + StratoFins - Image 1](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)

## Questions & Answers

**Q: Can you use without water?**
A: Yes, our StratoLauncher IV is designed to use with various fuel sources such as: air only or air and water, as well as dry ice and water although the latter can be a little tricky and dangerous. Not recommended and messy would be things like air and flour, cream of wheat, and similar dry cereals although these do not perform that well and leave a mess behind unlike just air or water.

**Q: Is there a way to fit a remote release? Also, what kind of altitude meter can I get? Thanks**
A: We have plans to develop a remote release this year, but that may take some time. Currently the 10 ft. cable is as remote as it gets. We will be coming out with a cable joiner in the next month or two that will connect another 10 ft. cable making it 20 ft. and it should allow multiples of these if you want to be even further away. Concerning altimeters watch the video link below about mounting an altimeter to a water rocket:
https://youtu.be/26iMMAWt3gw
Under the description you will find a link where these altimeters are available.

**Q: what is the bottle of blue liquid for?**
A: It is 242 Blue Removable Threadlocker for sealing all the fittings that screw into the launcher body. You can see the application of it in the assembly video that is linked in the instruction PDF and it has been uploaded on Amazon as well. It does take 24 hours to cure and harden before you can use the launcher, so plan accordingly.

**Q: How many nozzles come in a kit? (Not including strato fins)**
A: Only 1 nozzle comes in the kit, which can be used on the StratoFins or used without the StratoFins. The StratoFins do not come with a nozzle, since they were designed and sold to be used on most any water rocket launcher whether it uses a nozzle or not. If you need additional nozzles they can be purchased on our site (StratoFins.com).

## Frequently Bought Together

- Relationshipware StratoLauncher IV Water Rocket Launcher + StratoFins
- StratoFins Screw-on Water Rocket Fins - Compatible with 2 Liter Bottles or Smaller
- Relationshipware StratoChute 24" Red Rip-Stop Nylon Parachute for Water or Model Rocket

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-01-24*