Vincent 1000 Black Shadow Episode: 5.03
Suzuki KingQuad LT-250 Episode: 5.03
Suzuki KingQuad? http://quad.transworld.net/features/the-ugliest-atvs-ever/ indeed.
Suzuki LT250 quadrunner
BMW R100 TIC Episode: 5.03
Looks like a BMW Police special. Based on the R 100 RT perhaps. Something like that, yes. Same as /vehicle_188171-BMW-R-100-RT.html
This is actually an R 100 TIC, a police version of the R 100 with fairing from the RT: http://jhau.maliwi.de/mot/r100tic.html