Solas yf-cd-12/18 Concord Yamaha impeller has unique blade design that delivers remarkable thrust take off, improves acceleration and top speed. Solas YF-CD-12/18 impeller great for pulling skiers to racing 2+mph. Solas This upgrade over stock Yamaha impeller Fits Yamaha FX Cruiser 03-07, FX-140 02-07, SUV, XLT1200, XL1200Ltd,