Description says the supercharger has just been installed, and the bike has been ridden a total of 10 miles since - DUH!
1st question - Why would someone go to all that hassle to install the SC and then sell it without using it?
2nd - who would be dumb enough to buy it, given the 1st question.
Mind you, if i knew the build was thorough and proper, that it's been tested, and that it puts out 70 or 80 hp (can't see 100, nor how the motor would survive it), I could easily be talked into taking it for a spin - a long and fast one, of course!!