UIM classes Store / UIM classes Propellers for powerboats racing under UIM (International powerboat federation) classes. Specials Specials Featured Products OSY-400 €450 OSY-400 4 blade -50 eur SALE! F4 €700 F4 GT30 €650 GT30 GT15 €550 GT15 F125 €450 F125 F250 €470 F250 New custom sizes system! F1 and F2 €1 500 F1 and F2 R1000 €550 R1000 F500 €490 F500