Measure from the center line of the top shock mounting bolt to the center line of the lower shock mounting bolt. 12-3/4" is the standard HD shock length. 11-3/4" is the lowered HD shock length.
Measure from the center line of the top shock mounting bolt to the center line of the ORIGINAL lower shock mounting bolt on the swing arm. The dimension should be approximately 11-3/4".
Front Fork Lowering (stock front wheel and fender)
Measure between the top of the front fender and the bottom of the triple tree. A motorcycle lowered with the HD kit should measure approximately 4”. A standard height bike should be approximately 5” plus.
Front Fork Lowering (aftermarket fender or fender lift bracket)
Measure from the bottom of the triple tree, thru the fender mount, to the center line of the front axle.
2017 to Present = 18-1/4” Standard Height 2017 to Present = 17-1/2” HD Lowering Kit
2009 thru 2016 = 18-5/8” Standard Height 2009 thru 2016 = 17-7/8” HD Lowering Kit
2008 & Earlier = 19-1/2” – 19-7/8” Standard Height