I second the WD-40. I spray it on everything including my aluminum rims on my Fat Bob. Does't hurt anything and burns off when it gets hot.

 

Powder coat it all and yoru rust problems will be gone!

 

I use a 50/50 mix of white spirit (oil based paint thinner) and ordinary engine oil in an old trigger spray,my wife keeps all the empty kitchen ones for me.

I spay this over all the surfaces on my Street Bob avoiding the disks and drive belt of course ! and it really keeps the corrosion at bay if applied regularily,it collects dirt but is easily washed off in the spring and it costs pennies.

 

replace everything that is steel with 316SS. it will never rust.

 

why spend so much $$$? just spray on a lite coat of wd-40.