Nah they never made a TC fxr.
I never got the splined vs. woodruff key issue.
I ran 110hp at the rear wheel on my 86 FXR and never had an issue with anything letting go other that the turbo unit itself...(I like the 86 even more as I can use early Evo or Shovel parts on it as well)
Just personal preference really and service history for me. Stacks of people fk tapered hubs up and crack them by working on them without the right tools and manuals etc.
You may need to specifiy model years as well. I think they made a twink FXR (or was it a Dyna, no idea to be honest), but if its not an Evo or Shovel then its just not an FXR in my mind.
just after really model around 88 -94 were da best model's cheers , its for my nephew
I think in USA only in the 2000's the factory had a special run of FXR 2 & FXR3 that used EVO motor while Dyna Twin Cam carb 88" was the new bike of the day, was only a limited run of them and only in USA never other country's. people payed a lot more for these one's new too as I used to know people in USA tat bought two new.