---
product_id: 16624185
title: "Sailrite® 604u Monster II Balance Wheel"
brand: "sailrite"
price: "€ 97.77"
currency: EUR
in_stock: false
url: https://www.desertcart.com.cy/products/16624185-sailrite-604u-monster-ii-balance-wheel
store_origin: CY
region: Cyprus
---

# Complete Kit 7 lb. Steel USA Made Sailrite® 604u Monster II Balance Wheel

**Brand:** sailrite
**Price:** € 97.77
**Availability:** ❌ Out of Stock

## Summary

> 🧵 Elevate Your Sewing Game with the Monster II!

## Quick Answers

- **What is this?** Sailrite® 604u Monster II Balance Wheel by sailrite
- **How much does it cost?** € 97.77 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/16624185-sailrite-604u-monster-ii-balance-wheel)

## Best For

- sailrite enthusiasts

## Why This Product

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

## Key Features

- • **Precision Engineering:** Crafted from solid nickel-plated steel for durability and performance.
- • **Sew Anywhere, Anytime:** Hand crank feature ensures you're never left in the lurch.
- • **Proudly Made in the USA:** Support local craftsmanship with every stitch.
- • **Unleash Your Creativity:** Transform your sewing experience with enhanced power and control.
- • **Versatile Compatibility:** Designed for Ultrafeed LSZ-1 and LS-1 machines, fitting seamlessly with clutch or Posi-Pin systems.

## Overview

The Sailrite® 604u Monster II Balance Wheel is a premium sewing accessory designed to enhance the performance of Ultrafeed LSZ-1 and LS-1 machines. This kit includes a cogged balance wheel, timing belt, hand crank, and essential tools, allowing for seamless sewing even without electricity. Weighing 7 lbs and made from solid nickel-plated steel, it offers unmatched durability and control, all while being proudly manufactured in the USA.

## Description

Sailrite Monster II Balance Wheel is a balance wheel upgrade for the Ultrafeed Sewing Machines. Sailrite recommends this balance wheel because it enhances slow speed power and control for a great, steady feel when sewing at any speed. Additionally, the Monster II Balance Wheel comes with a hand crank to sew without electricity. The extra weight of the wheel creates momentum to make hand cranking effortless, even through thick assemblies. Made from 7-pounds of nickel-plated steel, the Monster II Balance Wheel is twice the size of a typical portable sewing machine balance wheel and the larger diameter enhances slow speed power and control. The hand crank handle easily attaches and detaches to suit your sewing preferences. The Monster II Balance wheel is for use on Ultrafeed Sewing Machines and works with the standard clutch or the Sailrite Patented Posi-Pin system. The Monster II Balance Wheel is made exclusively for Sailrite.

## Features

- Kit includes: Cogged Balance Wheel, Timing Belt, Plastic Hand Crank Handle, Shoulder Bolt, Set Screws, and an Allen Wrench. The hand crank allows for sewing use when electricity is not available.
- Greatly Increases Slow Speed Power and Control
- Use on Ultrafeed LSZ-1 or LS-1 Sewing Machines and works with the standard clutch or the Posi-Pin system
- 7 lb. Solid Nickel-Plated Steel Balance Wheel
- Made Exclusively by Sailrite in the USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Weight | 7 Pounds |
| Color | Silver |
| Exterior Finish | Machined |
| Material Type | Alloy Steel |

## Product Details

- **Brand:** Sailrite
- **Item Weight:** 7 Pounds
- **UPC:** 788490337584
- **Color:** Silver
- **Manufacturer:** Sailrite®

## Images

![Sailrite® 604u Monster II Balance Wheel - Image 1](https://m.media-amazon.com/images/I/61t1z8kPQpL.jpg)
![Sailrite® 604u Monster II Balance Wheel - Image 2](https://m.media-amazon.com/images/I/71CQUaHxR7L.jpg)

## Questions & Answers

**Q: Will this wheel kit also work on the Barracuda 2000U-33 from Reliable?**
A: This wheel should work with a barracuda.  Please note it will not eliminate the clutch, or convert to Posi Pin without further retrofit of your machine.  But it will work in place of the existing barracuda balance wheel, and will decrease speed, increasing power and control.

**Q: Will this work on the sewline slp 106?**
A: Although this balance wheel is for the Ultrafeed model, it will likely work on the SLP 106.  Compatibility is likely, but not guaranteed.  Please note that your sewline sewing machine does not have the Posi-Pin system, so you will either need to lock the balance wheel to the shaft using the included set screws, or will still encounter the same clutch slippage when sewing heavy materials.

**Q: Given the monster ii sailrite balance wheel fits the barracuda 2000u-33 what further retrofit is needed, eliminate the clutch, or convert posi pin**
A: The Posi Pin retrofit for older Sailrite Ultrafeed sewing machines can be performed on most clone machines such as the barracuda.  There is a video outlining this process and necessary components on the Sailrite website.  Note, the posi pin system will only work with Sailrite balance wheels such as the Monster II balance wheel.

**Q: Will this work with the Rex RX-607?**
A: The monster balance wheel should work on the Rex RX-607 being that it is a clone of our V1 machine  assuming they have not made any changes to the drive assembly.  It will not make your machine a posi pin machine.  it does include set screws so that you can lock the wheel to the friction clutch shaft.

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**Shop now:** [https://www.desertcart.com.cy/products/16624185-sailrite-604u-monster-ii-balance-wheel](https://www.desertcart.com.cy/products/16624185-sailrite-604u-monster-ii-balance-wheel)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-04*