Exhaust Gasket Set2 and 3 bolt exhaust gasket set Sold as a kit, these high quality gaskets: Are designed to fit 3 inch midpipes and high flow catalytic converters that use aftermarket flat flanges Are constructed of 100% carbon which is ideal for use with the high exhaust temperatures of the rotary engine. Is 4mm thick and designed to crush slightly more than traditional gaskets during installation. This feature will usually eliminate flange alignment issues when