Solas YD-CD-11/14 Concord Yamaha impeller has unique blade design that delivers remarkable thrust take off, improves acceleration and top speed 2+mph. Solas yd-cd-11/14 yamaha impeller is great for pulling skiers to racing. Solas This upgrade over stock Yamaha impeller Fits Yamaha XL 760 98-99, XL 700 99-04, Waveblaster II 97 repl 65r-r13211-10-00 64y-51321-a1-00