fmf headers

[bman863]

are they the same dimensions as stock? or do i have to use a fmf muffler with them? if they are not same as stock, which brand is?

[xtullyx16]

i think it is cause my power core 4 for my 400ex fits my stock header soo it should be vice versa for the fmf headers and stock end...

[bman863]

ok thnx!