Ultralight Aircraft Parts

Competition Aircraft, Inc.

Two, Three, and Four Blade Composite Propellers for Ultralight Aircraft Since 1983

The Ultra-Prop: Ultimate Props for Ultralights

Competition Aircraft is the home of the Ultra-Prop, a high performance composite propeller designed for use on ultralight aircraft including ultralight trikes, gyrocopters, and powered parachutes. The Ultra-Prop is also compatible with airboats, hovercraft, and airdrives for Flounder gigging and bow fishing.

The Ultra-Prop Propellers and propeller components we feature are manufactured for easy assembly and long life. Choose from 2, 3, 4, 5 and 6 blade propellers and select the ideal pitch and optimum diameter to suit your craft (up to 59" on 2, 3, and 4 blade propellers, 60" on 5 blade propellers, and 60 1/2" on 6 blade propellers). You will hear and feel the remarkable difference an Ultra-Prop makes on your first flight.

New digital propeller protractor available! Click here to learn more.
  • Lowest cost adjustable pitch prop in the world - 33 years in production - over 17,000 sold - satisfaction guaranteed!

  • Unique pitch block system holds blades at exact angle -- no protractor required.

  • All Ultra-Prop blades are identical and interchangeable -- featuring perfect balance and exceptionally smooth performance with tough, glass reinforced nylon material making them ideal for water or rough field operation.

  • Prices start at a low $250 for a 2-blade Ultra-Prop standard kit.

  • New spinner kit including mounting bracket and hardware for Ultra-Prop and Brolga tractor and pusher applications (not available for 5 and 6 blade propellers).

  • Check out our Propeller Recommendations for recommended Ultra-Prop combinations.

  • Assembly Instructions: Download in PDF format.


Ultra-Prop II

We are now shipping the Ultra-Prop II with a newly designed blade having optimum twist and fabricated with a new engineering thermoplastic resin with carbon fiber reinforcement.

The new series of 66" (or lesser) diameter 2, 3, 4, 5, and 6-blade Ultra-Prop II's will handle at least 25 HP/blade making it a great choice for engines from 20HP to over 100HP.

For more details, pictures, and pricing click here.



Spinners now available!
Click here to learn more about our products.

Ultralight Aircraft Parts
Please note: Spinners are not included with propeller
kits, but can be purchased separately.


Contact Us for a free brochure and prop selection charts. And be prepared for smooth, carefree flying when you choose the Ultra-Prop!