Belt Reduction Drive (28 to 40 hp)


Reduction drive comes with a waterjet-cut backing plate and also has a built-in belt tensioner, giving you a precise way to adjust belt tension. This reduction drive is designed to be on the water, with all aluminum and stainless steel parts and mounting hardware.

Not sure which drive or propeller to order? Check out our recommendations for drive setups on airboats, jon boats, bowfishing boats, hovercraft, and more!

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See one of these air drives in action near Hammond, Louisiana. This boat is running a 1.95:1 reduction drive and 65″ Mini Whirlwind propeller on a Briggs 37 hp EFI engine. This setup produces a massive amount of thrust! Video courtesy Mike Kliebert:

Rugged V belt reduction drive that fits nearly any small industrial engine. This is a perfect setup for mini airboats, jon boats, and bowfishing boats. Uses a 4 band V belt and fits most small 1 and 2 cylinder Briggs, Kohler, Honda, and Predator engines over 27 hp.

NOTE: For the Predator 22 hp engine, check out our reduction drive designed especially for the Predator 22.

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Additional information

Engine type

Kohler, Briggs, Predator, Honda, Duromax, Other

Reduction ratio


Engine Shaft Size

1", 1-1/8", 1-7/16", Other