Insanely Loud Ktm 250Sxf FMF Factory 4.1 RCT Sound Check 

The stock is loud but the fmf is pretty obnoxious and has a more crispy sound to it, It also changes the power.

@@FullThrottleEdits oh and the 250 sxf has that Braaaappp in the distance too? With the stock exhaust btw-

My kid say the 4.1 added power up top, vortex ignition was biggest performance boost so far.

Bottom end is alot more snappy, top end has a little more too

There's no power gains it's a placebo effect because the stock one has more packing making it dampen the sound. In fact the stock one has better performance. The only benefit from the fmf is a little lighter and sounds louder

@@Redwood414 aftermarket exhausts add power you realize that right?