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BMW E46 M3 Headers.
Good opportunity to modify this headers for free flow and keep your factory untouched !
The down pipe can be modified to open from 2,5inches each pipe, this will improve free flow and your top end !
I already modified one set on a E46 M3 track car and the top end is so much better than stock set up.
I do ship international out side of US. Please contact me for a quote to your specific location.
If questions 323.702.6733