From my Limited knowledge taking them apart, the 1200 rear master will not work on the 1983 1100, I am seeing a few "one year only" parts on that bike
I only have 2 left that are good cores, and I have the rebuild kits in stock, my eventual goal it to rebuild and have in stock, masters, calipers, carbs, and starters for all the models, currently only have starters for all models, but all good things take time,
I only have 2 left that are good cores, and I have the rebuild kits in stock, my eventual goal it to rebuild and have in stock, masters, calipers, carbs, and starters for all the models, currently only have starters for all models, but all good things take time,