it was loud enough for my buddys not to want to ride behind or to the right of me hehe, him not sure if the headers for the r6 and the r6s are the sameif this is for the 06 07 model the s, i might be interested.. You really thought it was too loud? My buddy had one with a gytr gutted like yours and it was louder then mine but not ridiculous like a race fit or anything.