on my 1100, i used all the 84 1200 stuff that Joe said would work, complete swing arm,wheel,brakes,shaft everything and just as Joe said.. bolt in and go!! you do gain a couple of inches of wheel base and you need to cut the groove or rain gutter out of the top/left inner rear fender or the much wider tire will rub as you bike will be a couple of inches lower, for me.. a HUGE plus! and in the end, you pick up right at 10 mph at the same rpm as the 1100 drive and wheel. If you run most of your riding at 80mph as i do, it makes it nice. Also as Joe said, you can also use the 1500 wheel and drive on your 1200 swing arm by drilling the holes. the change is that a 1500 uses a 16" wheel and the 1200 is a 15" wheel , i am sticking with the 15" wheel as i like the low bike. i also put the whole 1200 front end on mine and that lowered it another 1.5" in the front. for me it is right where i want it. you will love the 1200 rear end! and Man, it really fill's up the 1100 rear fender with tire! looks much better!
