This is a genuine SU kit. 967 Custom Cycles is an Authorized Dealer for SU/American Prime as well as others for thousands of parts.I can be found on the Mid-USA dealer locator as well as Facebook so you know exactly who you are dealing with. SU could easily be compared to a "boutique " type specialty for your Harley-Davidson. The carburetor assemblies are hand assembled one by one. Float Bowl Spacer Kit For SU Eliminator I & II. Extends The Float Bowl To Provide More Fuel For Larger Displacement Engines. First is the kit, second is shown installed, and third is the soccer with bowl. This is for the kit only.