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 . coming soon the ultra prop ii later ths year we re planning to introduce the ultra prop ii a newly designed blade with optimum twist and a new engineering thermoplastic resin with carbon reinforcement . this new series of 66 and smaller diameter 2 3 4 5 and 6 blade ultra props will handle at least 24 hp blade making it a great choice for engines from 20 hp to over 100 hp . to read the full story of how we developed the new ultra prop ii click here to see our flier . spinners now available click here to learn more about our products . please note spinners are not included with propellerkits 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 competition aircraft inc. 10925 shire court grass valley ca 95949 toll free 888 634 9839 voice 530 268 3048 fax 530 268 2321 ultra prop competitionaircraft.com brolga ultra prop powered parachutes airboat propellers ultralight trikes propellers for hovercraft propellers for gyrocopters home about ultralight aircraft parts pricing & ordering specifications propeller recommendations contact us site map