I hope your new ITP rims are 4/110 because that's the only adapter that STI offers... 4/144 to 4/110. They are also 1.5", so they'd make you 3" wider. I just don't like the idea of moving the unsprung weight out with a spacer. The cost for the STI adapter isn't cheap either... at about $122.00 each.sti is a company that makes them.. is use them on my paddles tires....your bolt pattern on your machine is 4/144.. u need to figure out the rim pattern to order both patterns adapted...