4-layer design - stainless steel wool, stainless screen, high-density woven temperature barrier and then FMF's exclusive packing material
Long lasting and resistant to blowing out
2 & 4 Stroke Silencer Packing
Performance series packing is made of fine interwoven fibers that have been blended to FMF's specifications for high heat resistance and sound absorption
Standard packing works great for M/X applications where maximum sound absorption isn't necessary