I sent an email to TM Designworks and they immediately answered. Love it! Talked to the very knowledgeable Rep. Verified that because mine the 250 exc is an enduro model, the material used is harder and does produce more noise, (on top of the added noise for the regular material), as well as riding style and the noise it produces from 'on the pipe' to just puttin' around. We talked about drivetrain and things and was a pleasure talking to him. Based off this, I have to try the old roller and slider so I can rule it out!
Will keep you guys posted
Will keep you guys posted