Progressive Drop-In Fork Lowering Kit For Harley Dyna Features: This fork Lowering Kit has transformed a once messy, and time consuming install into an easy install Pull up to two inches out of the front end of your bike without the hassle of disassembling the forks, pulling the wheel or even changing out the oil and the whole process can be done with basic tools Shorter springs and Progressive's secondary compensator spring make short work of the formerly complicated act of lowering your front end