this is my 1993 triumph trophy 1200, well my idea was to get a pair of NEW WHEELS from a Triumph trophy from a 2000 or any similar. never thought it will fit so easy. You just don't need to modify anything. not a single moment. first reason of doing it was that it's very hard to get cheep rear tyre as it had 18 inch. no i got new dunlop fo 50 pounds on. i also changed the sprocket kit, - i put the DID kit with biger front and smaller rear sprocket to get more speed in lower rpm. no it has 40 rear and 19 front. the chain fitts perfect, brake discs perfect and so on.