reduction drive

Reduction Drive


Rugged belt reduction drive designed for engines in the 13 – 35 horsepower range, including the popular Predator, Briggs, Kohler, Honda, and Subaru-Robin engines. Built from corrosion-resistant aluminum and stainless steel, these engines are commonly used on hovercraft and small airboats. Simple and ultra-light weight at just 15 lbs.

Download the UltraDrive Spec Sheet.

Need a fan to go with your engine? Contact us and we can set up the perfect redrive/fan combination for your engine.

Product Description

This is the fifth generation belt reduction drive we’ve developed specifically for the harsh environment encountered on hovercraft and airboats. It’s designed for engines up to 35 horsepower, and constructed of aluminum and stainless steel for durability in a wet environment. The cogged belt is quiet and efficient, and doesn’t slip when wet. An aluminum spacer with a 6 hole 75mm diameter pattern allows you to mount nearly any fan or propeller. Ratios between 1.40 and 1.75 are available. The standard propeller shaft offsets are 6.5 – 7 inches and 10 – 10.5 inches (depending on ratio), but different offsets are available upon request. For more information, contact us!