Lowering my front end
Race Tech: Uses longer top out springs thus raising the piston on the Seat Pipe/Damper Tube.
Progressive/the Company: Uses multiple top out springs. You can guess the ride quality.
HD: Uses a shortened Seat Pipe/Damper Tube (example 09 HD Drop Kit (2009 ~ Current) 54564-09 MSRP US $149.95
('06-'08 Touring) 54628-06 MSRP US $99.95
and included a set of stiffer springs to compensate for the available shorter stroke. The Top-Out Springs are the same as the same model/year and remain the same and are not changed.
- The Top-Out Springs is 0.90 long and collapses to 0.611/stroke of 0.289.
- The dampening tubes (PN#: 46422-09) (LOA) on 2009 is 7.251 /stroke: 4.434.
- The new shortened kit Seat Pipe LOA: 6.551/Stroke 3.734.


I never suggest lowering any bike because the ground clearance decreases, lean angle demises, and using the methods above, the ride quality is horrendous making for a very uncomfortable ride.
It would only stand to reason if a lowered bike is needed; you must lower the suspension components until the parts have enough clearance to work ie: fender not hitting the bottom of the triple tree et. Al. When modifying anything you should always know what you are doing and measure first prior to cutting.
I received measurements for a wheel/tire, fender w/clearance after dropping it onto the tire, than measuring full maximum OEM stroke, than calculating the shortest the suspension can be before hitting the light bar (if applicable) with a ź of clearance. That measurement is (varies with tire diameter) with the given tire including tire growth.
I first cut the fork tubes (cut tube(s) on top, OEM on bottom).

Cut the sliders the corresponding same distance to suite the job. Just make a fixture, make a program, true the sliders to the slider bore, than cut the sliders duplicating the race keeper and spring clip keeper.


I assembled the forks. The one on the left is OEM and the right is shortened to my target length. Both have the same OEM travel/stroke and no difference in ride quality while going straight.


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