Review on Dynofit Universal Thickness Spacers Multiple by Shane Jess

They are perfect for finding the right clearance for non-standard wheels or different size tires. There are special kits for this, but they cost a lot of money and mostly depend on the drilling pattern or the application. These are mostly universal. I probably wouldn't ride with the spacers installed, they don't have the ability to true spacers or wheels, but this is by far the most convenient and inexpensive way to determine the ideal spacer size for any application.