Front specs are 21.8mm wide with an 8mm through-hole. The rear is 40mm wide also with an 8mm through-hole.
We also have the 25mm hardware for the front of your Ripley 4, V1 & V2 Ripmo, HD5, Mojo 4 and Ripmo AF shock eyelet.
If you are looking for the rear hardware for a Ripley 4, any Ripmo, HD5/HD4 or Mojo 4 click here
Please specify forward or rear mounting hardware. Kit includes just the Fox reducer hardware, shock pins or bolts are sold separately.