Solas ST-CD-10/16 Concord SeaDoo impeller has unique blade design that delivers remarkable thrust take off, improves acceleration and top speed 2+mph. Solas ST-CD-10/16 is great for pulling skiers to race. This upgrade over stock Impeller Fits Sea Doo 3D  780/800 05-07, GTI LE 02-05, GTI 01-05, GTS '01.