UIM classes Store / UIM classes Propellers for powerboats racing under UIM (International powerboat federation) classes. Specials Specials Featured Products OSY-400 €630.74 OSY-400 4 blade -50 eur SALE! F4 €982.10 F4 GT30 €912.56 GT30 GT15 €772.26 GT15 F125 €630.74 F125 F250 €660.02 F250 New custom sizes system! F1 and F2 €2 104.50 F1 and F2 R1000 €772.26 R1000 F500 €683.20 F500