The one 111-116 upgrade in Australia cost 5 and a half for the big bore kit and another 2 1/4 roughly for the required compulsory stage kits (exhaust mainly?) including fitting, so around 7 1/2 grand.
So.. about 4500 USA, based on exchange rate
I have a 2020 RMDH with stock 116. Did stage one intake and exhaust off the showroom. Road about 900 miles and then has stage 2 done, bigger throttle body, cams, and bigger injectors. I can tell a difference. Had about the same ratio change the stage 2 did for my 111 I traded fit this bike. Nice lope at idle, and good power. I'm happy with it, will do pv3 later with some different head pipes.