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fmf factory 4

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has anyone run one of these pipes on there crf250r 04,just wondered wether there was much of a power gain,noise,etc,thanks.

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Mine came with one it. Compared to my CHM SM1 is was a bit later coming on the pipe, more "punchier". I prefer the SM1 because it comes on sooner and can actually be shifted a bit sooner if conditions arise that require it, without falling out of the sweet spot. I sold my FMF on Ebay....real quick it went...it ws the full on Ti powerbomb Factory-4 system...

Obviously, both offer more than stock :)

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