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stock exhaust db
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Posted by: quadrider60

what is the stock exhaust db level on a 400

Posted by: JRP

i think like 90-91. not 2 sure. jus a guess.

Posted by: dirt308

Its in one of the dirtwheels issues. I think its like 88 or something.

Posted by: jmpulse

Stock is in the mid 80's dB.

Posted by: 400EX QUADER

87!!

Posted by: throwinitup

not loud enough

Posted by: quadrider60

ok its 88db acording to dirtwheels

Posted by: 397ccEX

It is 88 decibals!

http://www.dirtwheelsmag.com/detail.asp?id=181

Posted by: muddy400EX

quote:
Originally posted by throwinitup
not loud enough

i agree

Posted by: Joe400ex

what do u think mine is ai without a quiet core

LRD Full Stystem

Posted by: Joe400ex

i wanted to go to Ciffs this weekend,but u need a sparkarrester and the db has to be max 96,do they do the test at idol