Impro's Hooker Impeller, Kawasaki 650 140mm Jet pump, 650sx, X2, TS, Jet Mate, etc. 9-15 pitch. Large 75mm hub, cut back 7mm, polished stainless steel radial blade design make these one of the best performing impellers on the market. Designed for MAXIMUM bottom end, and "hook up". Please email before ordering if unsure of application or pitch.