Another thing worth mentioning, my rotors had to be machined slightly to seat completely over the flanges on my axles. Not much, and may have been the cheap rotors I bought. When I installed mine I put an air fitting in the caliper and bolted the caliper to the bracket. Tightened the lug nuts on the rotor and slid the caliper with pads and bracket over the rotor and placed them where I wanted them. Put an air hose to the caliper to "clamp" it to the rotor and tack it up!

Randy