Thanks for the replies... And also my mechanic assumed that it won't fit... BUT, it did !!!
Its true that the connection to the exhaust pipe after the servoflap is a bit offset, but it still sits fine - no gaps. had to play with the clamp to find the best angle & position to prevent gas leaks and best sealing.
Yestarday morning went out for a 200 Km ride, well its sounds like K1200S, or even like my friend's Honda BB with OEM silencers !!!
Comparing to the Akrapovik Its quiet & smooth, no backfires when closing throttle, no blows when pulling the throttle & shifting gears up with the quickShifter... and the engine works better in idle..
Well, thinking about switch back to OEM K1300S/R silencer after the Akrapovik-Titanium will get back from repair, used one will cost less than the money i'll get from selling the Akra'