Grats on the pick up. The 899 wasn't a quiet bike to begin with which is why they have longer exhausts for it but that's just very un-panigale. They might make exhaust baffles depending on your exhaust. Would need a video to see what you're trying to fix.
Straights are for fast bikes, turns are for fast riders.
Aprilia Shiver 750: SOLD
Ducati Panigale 899: Track Weapon
Ducati Monster 1200: Daily Weapon