FOX - MOUNTING HARDWARE
If your rear shock already has the metal hardware pieces pressed into the top and bottom eyelets, follow these steps:
E.g: If your total width is 22mm and the hole is 8mm, your hardware size is M8 x 22mm
If you are building up a bare frame or the old hardware is worn or missing, you can measure the frame tabs directly:
Note: Always check both ends! The front frame mount (top of the shock) and rear frame mount (bottom of the shock) often use completely different widths. Be sure to measure both.