Unlike many 9-inch skidplates that attach only to the pinion support bolts, this attaches to the pinion support and third member case bolts for more strength. It also provides a smooth bottom to slide over rocks. It is intended for the early Bronco 9-inch, so we had to grind the pinion mount until it fit-but it cleared our F9 housing just fine. However, we lost about an inch of under-axle clearance and it illustrates how the formed F9 housing provides more ground clearance than a stock 9-inch. If it hangs us up too much, we'll cut and weld that section of the skid for more ground clearance.