Superior has a bolt in solution to the problem of your coils coming loose under down travel.

Using these items allow a larger shock by up to 4 inch longer to be used as the coil will be able to drop down approx 4 inches below the top coil seat before they will fall out.

It is recommended to fix the bottom of the coil to the diff when using these.

The drop outs are a bolt in item and are sold as a pair.