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can I use 3/4" bearings on a 25mm wheel?

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Old Apr 8, 2011 | 12:07 PM
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Default can I use 3/4" bearings on a 25mm wheel?

I am looking to buy a 17 x 5" wheel that comes with 25mm bearings and spacer sleeve. i am looking to put it on my 2003 Dyna Lowrider. The wheels fit an 07 sportster just fine. is the bearing Outside Diameter the same on 25mm and 3/4" bearings? or another choice is to convert my 3/4" axle to 25mm axle. Any help is greatly appreciated. I know the front 21" wheel will fit but the rear is a going to go from 3" to 5" wide rim. I'm going from my stock 150/80/16 to a 160/70/17 so the tire width is not an issue " I hope". It seems like a simple swap, but nothing is ever too simple. Sorry for the long post any help is greatly appreciated specially if some people have don this...
 
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Old Apr 9, 2011 | 09:58 AM
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Can 'you' do it? Sure... Would 'I' do it? Nope... 3/4" = 18mm
Getting the wheel installation kit from HD would be piece of mind...
http://www.harley-davidson.com/gma/g...bmLocale=en_US
 
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Old Apr 12, 2011 | 04:55 AM
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My understanding is that recent Harley wheels will accept 3/4", 1" and 25mm bearings, they are interchangeable. Check with the wheel maker if their wheel accepts the other sizes. If they are genuine Harley, check with your local friendly dealer! They should also be able to supply the conversion kit referred to by Baeseman1.
 
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Old Apr 13, 2011 | 08:21 PM
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thank you so much for your help. I will call the stealership tomorrow and further inquire on the fitment. The guy I'm getting the wheels from tells me he mocked them on a '07 sportster and they fit fine with the 25mm ID bearings. According to the kit number and description I'm assuming it will fit.

Wheel Installation Kits



Once you select your wheel style, select the Wheel Installation Kit designed specifically for your motorcycle. Kit includes the bearings and spacers required for installation. Requires separate purchase of brake rotor mounting hardware and sprocket hardware. Accessory rotor kits include mounting hardware.

43854-08A

Rear, 3/4" Axle


Fits '00-'04 XL models, '00-'05 Dyna® models, '00-'07 Softail® models, and '00-'01 Touring models
 
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Old Jan 10, 2022 | 05:22 PM
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So did the Harley installation kit work because I’m trying to put 3/4 bearings in a 25 mm sportster rim to put on my 2001 FXD and I’m hoping this is the answer lol
 
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Old Jan 10, 2022 | 07:22 PM
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I doubt you'll get an answer from him. The thread is almost 11 years old and Rougue 66 hasn't posted since 2012.
 
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Old Jan 12, 2022 | 06:49 AM
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Originally Posted by BossHogg776
So did the Harley installation kit work because I’m trying to put 3/4 bearings in a 25 mm sportster rim to put on my 2001 FXD and I’m hoping this is the answer lol
The Harley Kit does NOT work for what you're trying to do.

You can use some 25mm to 3/4" reducer bushings with some custom wheel spacers.

Is it the front or rear?



.
 
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Old Jan 18, 2022 | 01:01 AM
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It Is the rear and are thosespacers really safe ??
 
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Old Jan 18, 2022 | 07:43 AM
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Originally Posted by BossHogg776
... are those spacers really safe ??
Hmm ... in what respect do you think they would they be "unsafe"?


Also you could install the stock 3/4" 01 FXD bearings in the 25mm wheel along with the same width center spacer sleeve used in the 25mm wheel. The 3/4" are wider than the 25mm bearings so they would protrude only slightly. You would then trim down you existing wheel spacers to compensate fro the protrusion
 
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Old Jan 18, 2022 | 11:04 AM
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Originally Posted by multihdrdr
Hmm ... in what respect do you think they would they be "unsafe"?


Also you could install the stock 3/4" 01 FXD bearings in the 25mm wheel along with the same width center spacer sleeve used in the 25mm wheel. The 3/4" are wider than the 25mm bearings so they would protrude only slightly. You would then trim down you existing wheel spacers to compensate fro the protrusion

at that point couldn’t I just trim the center sleeve and push the bearings in flush?? of is there a way to ?? And idk how it would be unsafe but Im just worried because of all the space between the center sleeve and the axle. Could it cause the
bearing to fail



 

Last edited by BossHogg776; Jan 18, 2022 at 11:09 AM.
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