S&S CYCLE Base/Head Gaskets - Big Bore - Big Twin 90-1918 Power Tune Muffler Insert — Plugged/Rear Insulator is made of 95%

Insulator is made of 95% pure alumina

240T 600 mm DWR coating

Stainless steel pipe kit is mandrel bent and TIG welded

Drilled for internal wiring

Generous vents in the chin bar get the air flowing and the outlet in back lets hot air escape

S&S CYCLE Base/Head Gaskets - Big Bore - Big Twin 90-1918 Power Tune Muffler Insert — Plugged/Rear Insulator is made of 95%Head gaskets are made from aramid fiber reinforced premium graphite material with a steel core, stainless steel fire ring and anti stick coating Base gaskets feature S&S Pro Formance micropore compound proven to resist failure due to extrusion or blow out Made in the U. S. A.