Solas KG-CD-12/18 Concord Jetski impeller, has unique blade design that delivers remarkable thrust take off, improves acceleration and top speed. solas KG-CD-12/18 impeller is great for pulling skiers as well as racing. Jet Ski impeller fits 148mm pump diameter : KG-CD-12/18 ​This upgrade over stock FITS Kawasaki Jet Ski 1100STX DI 00-03, 1100STX 97-99,1100Zxi, STX 900 03-06 59255-3708 59255-3717 59255-3711 59255-3724