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I'm putting a switchback wheel on mine an from what I've read it bolts right up....you might need custom spacers to center the wheel. You could also use the 25 mm to 3/4 adapters so your axle will work with the wheel. I have a set somewhere I'm never going to use.
I think you're going to have to find them from a bearing supplier...the outside diameter is 52 mm, the inside diameter is what you want for your axle 3/4, 1", 25 mm. the difference is on 1" an 3/4" were 20 mm wide while the 25 mm are 15 mm wide. they would fit in the wheel but stick out, which might be ok but I don't know.
Axle Info: Dyna
2000-03 Dyna have ¾” front axle, 2004-07 Dyna have 1” front axle (except 2004-05 FXDWG), 2000-05 Dyna have 3/4” rear axle, 2006-07 Dyna have 1” rear axle. 2000-05 FXDWG have ¾” front and rear axles, 2006-07 FXDWG have 1” front and rear axles. All Dyna have 25mm axles from 2008+.
Info from J&P Cycles Catalog.
Axle info: Touring
2000-01 FLT have 1in front and 3/4in rear axles. 2002-07 FLT have 1in front and rear axles. All 2008-13 have 25mm front and rear.
2000-07 Softail have 3/4 inch front and rear axles except 2007 front is 25mm. All 2008 and up have 25mm front and rear axles except 2008-2011 FLSTSB front is 3/4 inch.
I did this a while ago when I put some V rod muscle wheels from a '12 onto my 02 v rod....I was re-reading some of the info an some guys say you can just pop the correct bearing for the year bike you have into the new wheel an get spacers to fit the new bearing width. I wanted the bearings flush so I could reuse the stock spacers. I've heard an read there's no problem with the axle adapters...they just take up the space between the bearing an axle, all the rolling is done by the bearings.
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