The Monster® II Balance Wheel is the top-tier balance wheel for Sailrite® Ultrafeed® Sewing Machines and brings smoother and quieter operation to your machine. Its extra-large size, the same as the Power Plus Balance Wheel, is twice the size of a traditional portable sewing machine balance wheel and provides better slow speed control and exceptional power.

Need to conserve energy? The Monster II Balance Wheel comes with a hand crank that allows for sewing without electricity. Made from 7 pounds of nickel-plated steel, this balance wheel’s weight creates enough momentum to make hand-cranking effortless while smoothly sewing through even thick assemblies.

The Monster II Balance Wheel is for use with Ultrafeed Sewing Machines and works with the standard clutch or Posi-Pin® Safety Shear. Installation instructions are included in the Ultrafeed Guidebook that came with the sewing machine. The Monster II Balance Wheel is made exclusively for Sailrite.

The Monster II Balance Wheel Kit Includes:

  • Cogged balance wheel
  • Timing belt
  • Plastic hand crank handle
  • Shoulder bolt
  • Set Screws
  • Allen wrenches

Please Note: This balance wheel alone will not add the Posi-Pin feature to your sewing machine. The Monster II Balance Wheel is included in all Ultrafeed PREMIUM packages.


Machine Series: Ultrafeed LS-1, Ultrafeed LSZ-1
Brand: Sailrite
Warranty: 1 Year


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Demo of Monster II Balance Wheel

Use the Monster II Balance Wheel for more power and great slow speed control. The Sailrite Monster II Balance Wheel includes a handcrank which works great when electrical power is not available or for those who want ultimate control when sewing. The Monster II Balance Wheel works on a standard clutch system or Sailrite's exclusive Posi-Pin system.

Monster II Balance Wheel Installation on Ultrafeed Posi-Pin Systems

If your Ultrafeed Sewing Machine has the Posi-Pin system (standard on all curent Ultrafeed machines) this video will show you how to install the optional Monster II Balance Wheel.

Monster II Balance Wheel Installation for Friction Clutch Sewing Machines

If your sewing machine has the friction clutch knob system (all newer Ultrafeed Sewing Machines now include the Posi Pin system), then this video will show you how to install the Monster II Balance Wheel. This installation is for machines without the Posi-Pin feature. It relates specifically to sewing machine units having the older inferior friction clutch assemblies.


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William Paugh
Verified Purchase

Does what was advertised. Great addition to my machine!!!

Marc Ranger
Verified Purchase


The Monster wheel made a huge difference. Sailrite shipped immediately and my only beef was the 3 week delay at Canada customs. A superb product though and I'm happy to finally get it.

Jack Casselberry
Verified Purchase

Worked great on a non Sailrite machine

The quality of this wheel is excellent.Workmanship and finish quality is fantastic and I am picky. It works great and installed with no problems..

James Garetson
Verified Purchase

Great for leather

Combined with the power B great for leather

David Teater
Verified Purchase

Super great buy

Perfect, just what I needed

Glenn Schnurbusch
Verified Purchase

A perfect add on for any machine.

There is nothing you can do to your machine that will make as much improvement as the Monster Wheel. The amount of control you gain is worth every penny you spend. The wheel is a must have for any machine.

Danny Moreau
Verified Purchase

Good Good

Pierre Lecoq
Verified Purchase

Very easy to install, and provides a much softer operation to the machine

Woodrow Star
Verified Purchase

Good product

I've sewen 5/6oz veg-tan leather. Works good

Robin Orr
Verified Purchase

Does the trick of slowing down the machine and adding power. Love the ability to "hand" sew with the machine.

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