---
product_id: 43502072
title: "StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit"
brand: "relationshipware"
price: "KD 51.78"
currency: KWD
in_stock: true
reviews_count: 10
category: "Relationshipware"
url: https://www.desertcart.com.kw/products/43502072-stratolauncher-iv-ultimate-tilting-water-rocket-launcher-stratofins-kit
store_origin: KW
region: Kuwait
---

# 350+ ft max launch height Fully upgradeable & expandable kit 125 PSI safety valve precision StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit

**Brand:** relationshipware
**Price:** KD 51.78
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your weekend with launches that break limits and spark envy!

## Quick Answers

- **What is this?** StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit by relationshipware
- **How much does it cost?** KD 51.78 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/43502072-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

- • **Sky-High Launch Power:** Propels 2L soda bottles over 350 feet for epic backyard shows
- • **Aerodynamic Flight Boost:** Includes StratoFins and nose cone design for stable, straight rocket trajectories
- • **STEM-Ready Expandability:** Modular kit supports upgrades and accessories to fuel your engineering creativity
- • **Precision Pressure Control:** Built-in 125 PSI safety valve ensures safe, consistent launches every time
- • **Universal Bottle Compatibility:** Works with most soda bottles from 0.5L to 2L, making launches hassle-free

## Overview

The StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit is a robust, metal-constructed water rocket system designed for serious hobbyists and STEM enthusiasts. Featuring a 125 PSI safety valve and compatibility with multiple soda bottle sizes, it can launch rockets over 350 feet. The kit includes aerodynamic fins and a ball head for precision flight, is fully upgradeable, and offers an engaging hands-on experience perfect for ages 14 and up.

## Description

Product description Available in 3 Models Our StratoLauncher IV, water rocket launcher is available in 3 models: Standard, Deluxe, and Ultimate. All of them perform the same and can be upgraded to add additional features and all come with a 125 PSI safety valve to prevent exploding bottles while pressurizing. Standard - plastic quick connector, no pressure gauge, does not tilt Deluxe - metal quick connector, air pressure gauge, tilting ball head Ultimate - same as Deluxe plus Q-connect water fill system made of 4 parts to connect a tank sprayer Our complete launcher kits will enable you to propel a 2-liter plastic (PET*) soda pop bottle over 350 ft. into the sky using only water and compressed air from a bicycle pump or an air compressor. View the 3 videos for this listing that cover benefits, assembly, and launch procedure. Nozzle Efficiency Requires only 200 ml or less of water to launch a 2-liter soda bottle from the StratoLauncher IV. This means carrying less water onto the field. Also, it functions very well with Air Only. More water can be used, but that will require a rail system or a narrow diameter rocket like an FTC (fluorescent tube cover) rocket. Nozzle Versatility Supports 5 different soda bottle sizes (0.5L, 1L 1.25L, 1.5L and 2L) @ air pressures as low as 15 PSI up to 120 PSI. Plus, launch homemade rockets, spliced versions, FTC rockets, gliders, and rocket cars. Although our StratoFins yield the best results, the StratoLauncher IV was designed to enable students and family members to create their own fin and rocket designs that will work merely by screwing on the black nozzle. Expandable Connect several StratoLauncher IV units together for large classes or STEM events. Fuel with a single water source (tank sprayer or garden hose) and pressurize with a single air source (bicycle pump, air compressor, or scuba tank) to get through a large field of participants in a short and safe period of time. Upgradeable Several upgrades are available to enhance your StratoLauncher IV water rocket launcher. Deluxe Upgrade Ultimate Upgrade 10 ft. Hose Extension 10 ft. Compressor Connect 48 in. Rail System

Review: Just AWESOME! - 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!
Review: Worth every penny... - I wanted something for the grand-kids to enjoy when they visit and they loved it. I was a initially hesitant about laying out $95 but the parts are all high quality. If you have done simple plumbing and adjusted brake cables on bicycles, you won't have any issues assembling it. It's lots of fun. Note: I elected to get a cheap $8 pressure sprayer rather than fiddle with the funnel. Also, make sure you use a good bicycle pump.

## 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 |
| Additional Features | Portable |
| Age Range Description | Kid |
| Are Batteries Required | No |
| Batteries are Included | No |
| Brand Name | Relationshipware |
| Color | Black |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.6 out of 5 stars 101 Reviews |
| Included Components | StratoLauncher IV, StratoFins, ball head, pressure gauge, QConnect with valve |
| Is Assembly Required | Yes |
| Item Dimensions | 8 x 7 x 12 inches |
| Item Weight | 2.88 Pounds |
| Manufacturer | Relationshipware |
| Manufacturer Maximum Age (MONTHS) | 1188.00 |
| Manufacturer Minimum Age (MONTHS) | 168.00 |
| Manufacturer Part Number | LCR-7 |
| Material Type | aluminum, stainless steel, brass, ABS plastic |
| Model Number | LCR-7 |
| Number of Items | 1 |
| Theme | Rocket |
| Toy Vehicle Form | Rocket |
| UPC | 700220319080 |
| Unit Count | 1.0 Count |

## Images

![StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit - Image 1](https://m.media-amazon.com/images/I/61NkbLJuD0L.jpg)
![StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit - Image 2](https://m.media-amazon.com/images/I/61RxerjZhRL.jpg)
![StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit - Image 3](https://m.media-amazon.com/images/I/71bCaWObGjL.jpg)
![StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit - Image 4](https://m.media-amazon.com/images/I/61ubuRbSyOL.jpg)
![StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit - Image 5](https://m.media-amazon.com/images/I/61QGBZFLwgL.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

### ⭐⭐⭐⭐⭐ Just AWESOME!
*by M***E on May 30, 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!

### ⭐⭐⭐⭐⭐ Worth every penny...
*by D***R on June 1, 2020*

I wanted something for the grand-kids to enjoy when they visit and they loved it. I was a initially hesitant about laying out $95 but the parts are all high quality. If you have done simple plumbing and adjusted brake cables on bicycles, you won't have any issues assembling it. It's lots of fun. Note: I elected to get a cheap $8 pressure sprayer rather than fiddle with the funnel. Also, make sure you use a good bicycle pump.

### ⭐⭐⭐ Okay start to a good kit. Half price elsewhere.
*by V***P on September 6, 2019*

It's pretty good, leaked despite having sealant on the threads. Just use the supplied thread tape on everything and it will be fine. The fin adaptor leaks no matter what. It's okay under 50 psi, but anything over loses pressure rapidly. Overall this is a good kit that can be adapted. Be aware that the fins are fragile... looks like by design with sharp edges and strategic hollow channels in the right places for stress risers. I added a 45 degree adaptor for the pressure gauge. It will foul against the Schrader valve and not turn if it goes in straight as designed (see pic). Be aware that is is available elsewhere (deluxe kit) for less than half the price that I paid. Needs to come with another bottle adaptor... lose one bottle and you are finished.

## Frequently Bought Together

- Relationshipware StratoLauncher IV Ultimate Tilting Water Rocket Launcher + StratoFins Kit
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- StratoFins Screw-on Water Rocket Fins - Compatible with 2 Liter Bottles or Smaller

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-05-17*