What parts from a rr6+ can fit on a rad city 5+?  Specificlly are the motor, contoller, brakes the same.  With the RR6+ hs priced at $1399 would it be worth it to buy  for spare parts?  Seeing all the posts about getting replacement controllers having a spare would be nice.  Spare parts inventory would be :
battery
charger
controller
motor
brakes
display
crank ?
pedals
rotors
derailleur
chain
lights
seat
Sell wheels and frame to needy owner

Question for anybody that has th Park Tool bkm-1 Brake Bleeting tool kit.  FYI you can buy replacement parts to this kit to reduce total cost and not have extra parts you don't need.   Which adapters do you use? I ordered and tested the purple adapter and it fits the caliper but not the lever.  Which adapter fits the lever?

Anybody know which park tool will work on a rad city 5 plus to remove the freewheel?

I have installed a 3d printed thumb throttle attachment fron Etsy on my City5 and it works OK.  I saw this thumb throttle replacement for the twist throttle on ebay and want to ask if anybody has tried it.  Here is a link to the thumb throttle.

https://www.ebay.com/itm/114158460232?hash=item1a945fdd48:g:aBIAAOSwCg9eenbX&amdata=enc%3AAQAHAAAA8OpGROewaXPB3ObulWCA7K2l4MLdA%2BTlu5KOMAQ3Tk72hntrwcryREHy%2Bki6IgVFu4pBt%2F7LbqTNDLkw0dHfAdokrKNYDl5Unvde7gbMCkgXvkY2pVmA%2FV3PLKcaK0wf58RwFN9rGK25IfppP1R92DuMkC4l01c0VJqWyhtfOK7fWICj1kxHNNd48Vjv9imXb5pzryUsIA677APcpuV95IP5szXNjqEODg7rFXkHDEUN7y9EebE6ykDi65at3Xj0SU%2FPIM2PmSN3Vud%2BnVwDAzrAvVMsj3mH0QY0jy4amp8hPpR%2FoXhtiEk0nGr3bzmbIA%3D%3D%7Ctkp%3ABFBM_JfWp8Zg

Anybody know of any specials from Rad PowerBikes on Memorial Day?

anybody know the seat tube diameter on the radcity 5 plus?  looking to get a non quick release clamp

Frame material on Rad City 5 Plus, aluminum or steel. Searched and didn't see answer and I didn't see it on Rad site either.