Stock Applications:
2009 FX HO
2009 FX Cruiser HO
2011-2015 VXR
2011-2015 VXS
Stock Engine: No modification made to the Engine.
Limited Engine: Little modification limited to bolt-on items with slight horsepower increase.
Modified Engine: Modifications including bolt-on items and internal changes, increasing horsepower considerably.
See Solas impeller guide to ensure correct fitment for your application.
http://www.solas.com/newweb/pwcproduct/search/default.asp