This is ZZPs replacement to our old Whisper resonator, it is very quiet. Our unique three chamber design cuts rasp down, gives your exhaust better tone, and helps reduce overall volume on your system. You can put these resonators basically anywhere and they will still provide that great ZZP exhaust note you've come to expect. This resonator can be used in place of a muffler as well! 

Our 2.5" version measures 28" end to end, with a 24" x 5.25" body.