I'm pretty sure the '83 gearbox has the "shift kit" already installed as
standard, so that will already make your shifting easier.
You could also install a later driveshaft, one with the in-line spring in
it, which absorbs shock and makes for smoother riding.
You could also install a rear drive from an R75, which will make you turn
more RPMs at all times, thus giving you a quicker bike. Your top end final
speed will be diminished, say from 124 mph to maybe 115 mph, but you will
get there quicker
You could install an electronic bean can and ICU from Motorrad Elektrik
And a larger alternator, several offer that.
Not sure of the year of your bike, but IF you install a 40 mm caliper from
a '75 or later, your braking ratio will improve.
And if you go with a smaller brake master cylinder, your braking ratio will
improve.
See the m/c versus caliper chart here:
vintagebrake.com
And a stainless front brake line will give you better "feel", less mushy
Some like the Race Tech Gold Valve Emulators in the front end; basically it
is more modern front end internals, and they have more adjustments. I have
them on an R80G/S and it is a definite improvement.
I have to quit this
Just trying to spend your money for you
Mac Kirkpatrick
Glenmoore, PA
After all, what is adventure, but inconvenience, properly regarded?"
C. Donahue