Yes the bladder like the s2/4r. Where all the silencing goes on and the catalyser. Now for this very reason I am thinking the Full Throttle Termis are not such a good deal. It appears to me the FOR ROAD USE ones as on the FT also have a bladder so are muted the same and basically have 2 pipe exit with some nice decals on. I will want to lose the bladder and unleash more noise and more power so will look at custom or better systems.