I easily mounted this muffler on my new 2016 KTM 250 XC-W because I had to have a spark arrester to be legal in Michigan, and also wanted a quiet exhaust note. Easy on, very quiet, and good looking. KTM should supply this with the bike! Fit and finish is excellent. This is not my first FMF product and likely won't be my last.
It is not any more quiet than my stock silencer, but paired with an FMF Gnarly pipe I have increased bottom end torque.