For more information about the Progressive Suspension Drop-in Fork Spring Lowering Kit, visit the Dennis Kirk website at Founded in 1982, .<br>We install Progressive Suspensions Drop In fork Lowering kit in a 2007 Dyna Street Bob <br>For more information about the Progressive Suspension Drop-in Fork Spring Lowering Kit, visit the Dennis Kirk website at Founded in 1982, .<br>This video shows how-to lower the front of your Harley using the Progressive Suspension drop in fork lowering kit. Bike shown is my 99 Softail dubbed project .
