Arata does a full and slip on system for this bike... seen a few different versions... Problem is they suck for service, and answering questions and most things are built to order.. I planned on a Arata system, sent them picture of the exhaust i had seen of theirs on the same bike, but could not get a straight answer from them if that is what they would send, and no pictures from them to confirm the exhaust. From what i was told, Arata is now owned by some South African Guy, and he is working to get them back to be what they once were.Check with LDH.
I know he can still get Arata full systems for some bikes. They made the best, even better than Akra. Not sure if they make it for new 1k’s. Japan’s finest.