should i shorten my fmf power core?

Years ago I had collected nearly a dozen KTM mufflers for my 125 and 300 bikes.
Due to the nearly standard frame, they were easily interchangeable.
I had stock (hockeysticks), shortened stock and aftermarket silencers.
A couple of things stood out, the 125 favoured shorter mufflers, the 300 longer for both power and noise.
Shortened mufflers tended to produce a sharper, higher pitch noise than their longer deeper pitched brethren.

My favourite mufflers for the two bikes ended up being a Pro Circuit 304 shorty for the 125 and an Enduro Engineering EE3 for the 300.

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I think the performance differences were more related to rpm than displacement. Where the 200 Blaster engine runs closer to the 300 in rpm range, I think a longer silencer would be a better idea. That said, the performance differences were slight, but the noise differences were severe.
 
Years ago I had collected nearly a dozen KTM mufflers for my 125 and 300 bikes.
Due to the nearly standard frame, they were easily interchangeable.
I had stock (hockeysticks), shortened stock and aftermarket silencers.
A couple of things stood out, the 125 favoured shorter mufflers, the 300 longer for both power and noise.
Shortened mufflers tended to produce a sharper, higher pitch noise than their longer deeper pitched brethren.

My favourite mufflers for the two bikes ended up being a Pro Circuit 304 shorty for the 125 and an Enduro Engineering EE3 for the 300.

560787_10151004874795803_530418149_n.jpg


18733_291155990802_505934_n.jpg


I think the performance differences were more related to rpm than displacement. Where the 200 Blaster engine runs closer to the 300 in rpm range, I think a longer silencer would be a better idea. That said, the performance differences were slight, but the noise differences were severe.

i like the sound to be sharper then deep but still have a deep sound. and also the factor of if i shorten it it wont really change all that much but if i keep it long and over do a wheely there goes my silencer and prolly if the bracket holds up a cracked frame. imma just shorten it cause i don't want to have to worry about dinging it up over doing it
 
just cut it if its out past the fenders. use real packing matterial instead of steel wool to keep the sound down a little. don't want to buy a silencer for an "over wheelie"