Spacer NOT required for models with Sparco steering wheel
Great product, easy to use, does put the steering wheel 2 inches closer which is a little less comfortable, and the blinker is no longer in reach without letting go of the steering wheel. But, it does exactly what it's designed to do, absolutely no play in the steering which I was worried about. You do not need a hub adaptor if your slingshot came with the Sparco steering wheel.

Wow!
I don't know why I hesitated before. Great quality!

NRG quick release
I love the new style of the quick release and the color options, I went with the black with red ring, it matches my white slingshot

Works great!
Love it and I would recommend it. The only small issue I have is when removing the steering wheel, the button which is required to be pushed at the top of the hub will pinch your finger.

Amazing
Great products and customer service