---
product_id: 264156640
title: "Relationshipware StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit"
brand: "relationshipware"
price: "₨4679"
currency: SCR
in_stock: true
reviews_count: 5
category: "Relationshipware"
url: https://www.desertcart.sc/products/264156640-relationshipware-stratolauncher-iv-ultimate-tilting-water-rocket-launcher-stratofins-kit
store_origin: SC
region: Seychelles
---

# 350+ ft max flight Fully upgradeable STEM kit 125 PSI safety valve Relationshipware StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit

**Brand:** relationshipware
**Price:** ₨4679
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your STEM game—launch into the future of fun and learning!

## Quick Answers

- **What is this?** Relationshipware StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit by relationshipware
- **How much does it cost?** ₨4679 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/264156640-relationshipware-stratolauncher-iv-ultimate-tilting-water-rocket-launcher-stratofins-kit)

## 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

- • **Effortless Assembly:** Quick setup with clear video guidance—get launching in minutes, no hassle.
- • **Sky-High Performance:** Launch 2L soda bottles over 350 feet with precision tilting control.
- • **STEM-Ready & Expandable:** Modular design supports upgrades and accessories for endless educational fun.
- • **Universal Compatibility:** Works with most soda bottle sizes from 0.5L to 2L, maximizing your rocket options.
- • **Built for Safety & Power:** Robust 125 PSI safety valve ensures secure, high-pressure launches every time.

## Overview

The Relationshipware StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit is a premium, easy-to-assemble water rocket system designed for ages 14+. Featuring a durable metal frame, a 125 PSI safety valve, and aerodynamic StratoFins, it propels 2-liter soda bottles over 350 feet. Compatible with multiple bottle sizes and fully upgradeable, it’s the perfect hands-on STEM tool for educators and enthusiasts aiming to combine thrilling launches with physics education.

## Description

Buy Relationshipware StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: I am completly blown away with the quality of this product. Certainly made to withstand thousands of launches. Looking forward to teaching the kids the physics behind water rockets. Thanks a million.
Review: Great fun with the kids, make sure you use air compressor fittings. I have plans for better rockets, see how high we can go.

## 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 StratoLauncher IV, StratoFins, ball head, pressure gauge, QConnect w/valve (tank not included). Watch assembly video on this listing at the end of the pictures.
- StratoLauncher IV Ultimate 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 |
|---------------|-------|
| ASIN | B071SJQ762 |
| Assembly Required | Yes |
| Batteries Included? | No |
| Batteries Required? | No |
| Color | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (90) |
| Date First Available | 8 September 2017 |
| Educational Objective(s) | STEM Learning |
| Item model number | LCR-7 |
| Language | English |
| Manufacturer recommended age | 14 years and up |
| Material Type(s) | aluminum, stainless steel, brass, ABS plastic |
| Number of Puzzle Pieces | 1 |
| Product Dimensions | 20.32 x 17.78 x 30.48 cm; 1.31 kg |

## Images

![Relationshipware StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit - Image 1](https://m.media-amazon.com/images/I/61+k1Ho-MvL.jpg)
![Relationshipware StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit - Image 2](https://m.media-amazon.com/images/I/61NkbLJuD0L.jpg)
![Relationshipware StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit - Image 3](https://m.media-amazon.com/images/I/61QGBZFLwgL.jpg)
![Relationshipware StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit - Image 4](https://m.media-amazon.com/images/I/61RxerjZhRL.jpg)
![Relationshipware StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit - Image 5](https://m.media-amazon.com/images/I/61YmzoH-gfL.jpg)

## Questions & Answers

**Q: What is the difference between the deluxe kit and ultimate kit, other than cost?**
A: Both the Deluxe and Ultimate models are exactly the same other than the Ultimate includes 4 additional parts, which can be purchased as an upgrade kit separately if you buy the Deluxe model. These 4 additional parts are a mini ball valve, a Quick Release M Plug, a Quick Release connector, and a 1/4" NPT barbed fitting. This creates the Quick Connect Water Fill System that attaches to an inexpensive 2 gallon tank sprayer, which you would need to buy from a local hardware store. Our water fill system fuels a rocket very quickly yielding about 30 launches with a 2 gallon tank and makes transporting water to the field easy without having to drag additional jugs or bottles of water along. Thank you for asking the question. If you have any more questions, we are happy to provide answers.

**Q: So i see this uses Gardena style nozzles. I know that standard Gardena nozzles do not fit bottles, so where can i get addtional nozzles??**
A: There a few shops online that sells them, you can also 3D print them

**Q: Do I really need the 2gl tank sprayer to properly operate this launcher?**
A: No you do not. If you are doing many sequential launches, it does make it easier/quicker to hook up a tank sprayer to the launcher to fill the rocket. If you are using a tank sprayer, you just lock the empty rocket onto the launcher, turn the ball valve on the launcher to open the water inlet that the sprayer is quick-connected to, and close it when the desired amount of water has flowed into the rocket. If you don't have the sprayer, you just have to fill the rocket each time using the funnel before you place it on the launcher.

**Q: Can I use a higher tank spray?**
A: Not sure what you mean by a higher tank spray, unless you mean a higher than 2 gal. capacity, which is what we typically recommend. If that is the case, than yes you can use a higher volume tank or a taller tank or even a higher pressure tank sprayer. The restrictions are not on the tank sprayer, but on the amount of water that fills the rocket, which should be limited to about 1 cup of water. A 2 gal. tank sprayer will yield about 30 launches. The other restriction would be the max PSI for pressurizing the rocket, which is 120 PSI and the safety valve will release at 125 PSI. I hope this answers your question otherwise please provide more detail when asking your question.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by D***E on 1 February 2023*

I am completly blown away with the quality of this product. Certainly made to withstand thousands of launches. Looking forward to teaching the kids the physics behind water rockets. Thanks a million.

### ⭐⭐⭐⭐⭐ Review
*by M***D on 8 June 2021*

Great fun with the kids, make sure you use air compressor fittings. I have plans for better rockets, see how high we can go.

### ⭐⭐⭐⭐⭐ Review
*by M***E on 30 May 2019*

This launcher is super fun. It is very well made with metal components and boy can you get those water bottle rockets launched high! I definitely recommend purchasing additional bottle launch caps from the company as you may lose a bottle or two but this thing is amazing. The hardest part is the workout pumping the pressure into the system. At around 100psi you might never see your rocket again but boy is it worth every penny!

## Frequently Bought Together

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

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-01-27*