The frame on the 12 is old fashioned, and that makes it hard to work on.
The 12 "Pushes" too much air and will always need more power to go fast.
The frame design is why I did not buy one.
The Hayabusa is the only "Legendary" fastest sportbike created as such, the 12 played catchup and is an afterthought.
Kawasaki and Suzuki are now owned by one corp. and the Kaw Division needs to "redesign" and come up with a purpose built machine and drop the top speed limiter, Suzuki needs only revamp a few things like the front brakes and bump up the cc's to 1400 and it will remain the King of Speed.
Honda will come out with a 1300xx Next year thats all new to "try" and compete with the Busa.......Where is Yamaha? They dont dare try to develope an all new Busa killer because of the cost of engineering R&D........it's not their cup of tea anyway, if it were nothing would beat the V-MAX in the Quarter Mile...ever!