Originally Posted by signsbyesa
9inch have just a sleeve like the 8.75 mopar that rely on the
shims for preload, crush sleeves are a one time use:
The Ford 9" uses a crush sleeve on a stock set up. I agree the crush sleeve is a one time use and for racing I would use a spacer but I have seen a lot of racing 9" rears that still had a crush sleeve. That's why I warned him about damaging the pinion bearings.