Purchased these for a 1990 Indy 500. Inside diameter was perfect. Outside diameter was way off. They were too big to fit in trailing arms. Had to beat in with a rubber hammer. Then had to beat spindle in. Once together the spindle couldn't spin. Tried to take them apart to sand the outside, they broke. Went to Polaris and spent $2 more than this set and they went in perfect and the spindles turn great.