With all the different exhaust systems, who knows the best pipe to put on the YFZ450? Has anybody performed a pipe shootout on this machine?

 

i think the esr makes the most upper mid and top end and the sparks has better bottom end and mid but a lil less top end power. i have ridden 2 of my friends bikes and the esr piped bike definately has a lil more top end but the sparks piped bike pulls ahead the first two gears then the esr piped passes at the top.

 

ive heard that hmf makes a really good set up.