Measuring shock length
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#3
Join Date: Aug 2009
Location: Columbus, Ohio, USA
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OEM shocks are center-to-center at full extended length. This is essentially the same as when they are sitting unbolted save a few tenths of a millimeter.
When ordering new shocks, go with 12.5" or above. Most companies use this as the point where the spring rate changes from the short travel to long travel (and accompanying damping force changes), which leads to a much better ride.
Short dampers are only for looks. The best range for Sportsters is 12.5" to 14.5" dampers. Above or below that is a design compromise when you consider our frame and swingarm setups.
My personal choice would be 13"-14".
When ordering new shocks, go with 12.5" or above. Most companies use this as the point where the spring rate changes from the short travel to long travel (and accompanying damping force changes), which leads to a much better ride.
Short dampers are only for looks. The best range for Sportsters is 12.5" to 14.5" dampers. Above or below that is a design compromise when you consider our frame and swingarm setups.
My personal choice would be 13"-14".
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Join Date: Oct 2007
Location: Colonial Beach, Virginia
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Since the shocks are at approximately a 45 degree angle to the swing arm the bike will only be raised about half of the additional length, give or take a little. More or less. This is how my 1200 C sits with 13.5" Progressives 440s on the rear.
Last edited by 1200Cdriver; 10-16-2014 at 08:55 PM.
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