i don't have problem with teh noise. in teh cab. i can hear my fine. i do have to turn the radio down a little. but once your up to speed its not loud. only on take off and when your into teh pedal. i had a guy stop by my house yesterday he was and older guy that had a 05 kr f250 cc and just wanted to hear how they sounded. cool guy to talk to and i gave him teh website to come her. but overall i really like the stacks and love teh osund.