This looks like a pukka bit of kit, imported from America, PM 8-spoke back wheel, Supertrapp pipe, flat track triple clamps, Racetech rear shocks (I think), chain drive, Dunlop race rubber; engine stamped race only, so probably from the H-D supported Sportster series than ran from the 80s into the 90s (and maybe even longer).
It looks like it would be great for the 2017 DTRA Hooligan Championship. That will be four rounds with a big trophy at the end and lots of fun in between.
Only one day left on eBay. Not reached its reserve. This sale is nothing to do with us. We don't know the bike or the owner. Buy beware. Thanks to Kev H again.