Installed in my Polaris Slingshot. I used a short adapter and spacer (NRG clone). All in all, this is a winner. Pros: Looks good, the color is vivid. feels very good. The price doesn't bite. Cons: 1. Fittings are cheap and soft as butter. Just go to the hardware store and buy hardened screws. There's no point in risking your life for more than $5 worth of extra screws. 2. Horn design is terrible. Unreliable. You have to press firmly on the center and move your thumb to make contact. I was able to replicate it. I used mechanical safety wire to make a good connection between spring and space connection. I also rocked the center and put in a small nut and bolt for the center connection. Horn works great now.