I'd NEVER take a vehicle to a bike ride!!!.......

......the pinion cup came in today.......I've never changed it out......Big BF told me which other parts I should get.....some oil seals and such....I had already added most of them to "the cart"....I even ordered some exhaust gaskets(I've never removed the exhaust before) as it says that is the way to replace the U-joint......
I changed out my u-joint not long ago. You don't need to remove
the pipes, I'd have to look at the manual to even see how they
think that helps. I guess they want you to be able to reach
up from underneath.
I got to the normal point where you have the final drive out,
like when you change a tire.
Then I took a few odds and ends off at the rear brake, like
the brake reservoir cover and the brake master cylinder cover,
to open up the access to the boot, which you can see back
there.
I peeled off (both ends?) of the boot and pulled the ujoint
off the output shaft and had it in my hands.
We tested the joint by locking one end of it in neighbor Dan's vise,
and tried to feel if there was any play in the joint by grabbing the
other end with channel locks - we could feel play.
I managed to get the boot back on using Lady Draco's roll-on
method.
Stanley... unless your drive shaft looks worn on the ujoint end,
I bet your ujoint is good. I checked mine because I was
feeling a shimmy.
If there's no wear on your old drive shaft's ujoint end, then you
won't be putting a new drive shaft into a worn ujoint.
The connections at both ends of the ujoint aren't wobbly connections
like at the pinion end of the drive shaft.
I think most Valkyrie ujoints fail in the joint, and not at the splined
connections. I'd hate for your ujoint to explode next time you go
for a ride, but if you ride hard

and don't feel any shimmy, the
joint is probably OK...
-Mike