I’ve been told by a “knowledgeable” person that in the early days of the Busa there were instances of broken frames at the headstock. They were covered up by Suzuki.
I know of the rear subframe breakage issue when they used an alloy frame, but I’ve never heard of anything wrong with the headstocks.
Any ideas?
Edit: by the way, I bought my first Busa in 99 and have had 5 in total, raced and crashed but never had any concern about frame solidity. My latest Busa is a show worthy, low mileage 99