Pretty sure the wheels are different on the 1250... but that doesn't mean anything regarding sprockets.
I don't know if the 1200 sprockets are bolt-ons for the 1250, though. As a guess, I'd say they probably do - especially the rear one, since it's a pretty common Suzuki pattern on the 1200 (ie; shared with many other Suzuki chain drive bikes with 530 chain).