Universal Polini Multi Purpose insulating wool for the exhaust rear section time, the Burns and Verölt the insulating wool in every silencer. The exhaust is loud, as well as the performance of the engine can because of unsuitable turbulence in the silencer Sink.’The Polini exhaust insulating wool was specially developed for this purpose. Normal “insulating wool from home improvement meets to this purpose it wasn’t me pack is enough for 2-3 fillingsfacturer’s number: 217.0010Item number: POL2170010