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Are all 39 MM front ends the same? For instance- Sportsters, Low Riders and Super Glides from the 90s up through the mid 2000s all had 39 mm front ends. Are the parts interchangeable? Could I use the springs from a Sportster in a Super Glide or are there differences based on the heavier weight of the Big Twins versus the Sportsters?
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39 mm front ends
