Solas yg-df-14/20 Dynafly yamaha impeller will give increased acceleration and top speed 2+mph. Solas Yamaha Waverunner impeller is Great  for pulling skiers to racing. Solas yg-df-14/20 ​This upgrade over stock Fits Waverunner Yamaha GP1300R 05-08, Waverunner FX Cruiser High Output 04-08, FX High Output 04-08, cruiser ho 04-08 and replaces 60T-R1321-10-00 6B6-R1321-00-00