noob to ridin need help

[toady]

i just got into riding and was wonderin wats the best pipes for my 400ex? thx for your help guys.

[toady]

oh yea and i drag race in sand if that helps.

[almostred434]

i dunno if there is one single best pipe but its prolly b/w
curtis sparks and HMF in my opinion i have an HMF sport series and i love it
good luck with whatever u decide it will definitly wake that quad up

[400exMO]

alot of the pipes are going to be pretty equal. HMF is a pretty well made pipe with alot of power.