Review on Ford Racing M5300K Lowering Spring by Ken Coste

I installed them on a 2005 Mustang GT. Easy installation with standard workshop tools. It is not necessary to use a spring tensioning tool. Use a jack to remove the old spring and install it in one go as it is 1.5 inches shorter than stock. It's been a year since they were installed and I'm very happy with them. Ride height and after a crash with my stock 17" wheels, the rear still looks punctured but the front fits well. Last week I upgraded the rims to 19" (p245/45/19) and now the car looks like it should have rolled out of the parking lot in the first place. Now everything has fitted very well. My only complaint about the lowering springs is, that I hear an audible click every time I turn the steering wheel all the way one way or the other.(See the part about not having to use a spring compression tool.) I suspect there is a way to fix this, by adding spacers/rubber mats where the coils rest on the posts.But I'm not going back there to try and fix the intermittent audible knock.