OEM rear Sprocket offset
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Stellar HDF Member
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From: Eastern NC
OEM rear Sprocket offset
I wanted to replace the rear sprocket 48T on my 83 FXR and the 51T rear sprocket on my 81 FXWG.
What is the OEM offset for each? Manual has no offset numbers. I'm getting some conflicting info from a vendor I normally buy from.
Both my sprockets are dished( no spacers) and from bolt mounting surface to outer edge of sprockets I get aprox 1/4" for 81 FXWG and aprox 1/2" for 83 FXR
What is the OEM offset for each? Manual has no offset numbers. I'm getting some conflicting info from a vendor I normally buy from.
Both my sprockets are dished( no spacers) and from bolt mounting surface to outer edge of sprockets I get aprox 1/4" for 81 FXWG and aprox 1/2" for 83 FXR
Thread Starter
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Stellar HDF Member
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
Thread Starter
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Stellar HDF Member
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
Thanks Joe. When I was attempting to order new sprockets I was given several different offset from vendors.
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Stellar HDF Member
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
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Road Captain
Joined: Jul 2021
Posts: 605
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From: BRIGHTON, ENGLAND
on my shovels, I had an off set sprocket about 1/4 inch out,
but I recently fitted a rear 'Wagon Wheel' with the round spokes off of a 2004 Road King I think.
after spacing the wheel centered in the frame, I needed a flat conversion sprocket to line the chain up right,..
I think until the fat wheel Harleys came out in the last 15-20 years, that most rear wheels from the late 30's to the 2000's are within a few thou of each other for the major measurements such as disc, sprocket, pully fitment as the factory didnt like change as it cost money to re-tool,
in your case I dont have a definative answer, as parts did often change for whatever factory reason,
so if I were in your shoes, I'd mount the wheel without spacers, center the rubber, then see where the chain wants to be & get the sprocket that is the best either flat, dished out or dished in.... remember, the Factory did at times throw any old thing on them just to get them out the door.
but I recently fitted a rear 'Wagon Wheel' with the round spokes off of a 2004 Road King I think.
after spacing the wheel centered in the frame, I needed a flat conversion sprocket to line the chain up right,..
I think until the fat wheel Harleys came out in the last 15-20 years, that most rear wheels from the late 30's to the 2000's are within a few thou of each other for the major measurements such as disc, sprocket, pully fitment as the factory didnt like change as it cost money to re-tool,
in your case I dont have a definative answer, as parts did often change for whatever factory reason,
so if I were in your shoes, I'd mount the wheel without spacers, center the rubber, then see where the chain wants to be & get the sprocket that is the best either flat, dished out or dished in.... remember, the Factory did at times throw any old thing on them just to get them out the door.
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