FXR transmission
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Novice
Joined: Mar 2007
Posts: 17
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From: Lehigh Valley, PA
FXR transmission
My 88 FXR tranny has a tapered end main shaft with woodruff key. Newer models have a splined shaft (at the output end).
Does anyone know what year they changed? The gear sets offered by some suppliers all show splined shafts. Other than a new clutch basket what other changes would be needed to replace my original tapered shaft gear set with a splined shaft gear set?
Does anyone know what year they changed? The gear sets offered by some suppliers all show splined shafts. Other than a new clutch basket what other changes would be needed to replace my original tapered shaft gear set with a splined shaft gear set?
Cruiser
Joined: May 2015
Posts: 108
Likes: 0
From: GA
Last time I changed a fxr tapered shaft to splined I don't remember it being complicated. Just bought a used splined shaft off ebay and swapped it out. Was building a FXR and bought a complete stock primary from a newer FXR, so could not use the tapered shaft. I could be wrong....but pretty sure I just swapped out that shaft and only the shaft. Was pretty simple for someone with mechanical ability. May need a different nut or something...but since I recall buying a COMPLETE primary I did not have to buy anything else. The nuts may or may not be the same...been 12 years so not 100% sure.
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,565
Likes: 3,317
From: Cental, MI
The newer clutch is Much nicer to ride, also.
Ultimate HDF Member
Joined: Apr 2014
Posts: 6,322
Likes: 2,500
From: Tennessee
Agreed!
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Seasoned HDF Member
Joined: May 2008
Posts: 21,026
Likes: 12,549
From: South Carolina
The only splined mainshaft that is compatible with an `89 or earlier gearset is one made for model year 1990.
It is easier to just find and entire gearset and swap it out.
Also the clutch must be changed of course, and that is what makes this project expensive.
It is easier to just find and entire gearset and swap it out.
Also the clutch must be changed of course, and that is what makes this project expensive.
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Ultimate HDF Member
Joined: Apr 2014
Posts: 6,322
Likes: 2,500
From: Tennessee
Gear sets are inexpensive and plentiful, They are all over e-bay.
I agree that it would be easier and cheaper to just buy a complete gear set and be done with it and then you can sell yours to someone that's looking for a tapered shaft gear set.
I always keep an extra gear set around, just in case I have a breakdown.
I'm running my spare set now while I rebuild my original set and put in a new main shaft...That way I can still ride the bike while I work on the transmission at my leisure.
