Heavy-Duty Steel Reinforced Replacement Cylinder Gasket Set (2-Bolt)Complete engine RC/CY gasket set. Includes 2 heavy-duty exhaust gaskets! This is great addition to any engine but a must for any high compression engine. Avoid those pesky blowouts with super heavy-duty gasket set manufactured from flexible graphite and bonded to a stainless steel insert. Flexible graphite can withstand extreme temps and has superior sealing abilities; combined with a stainless steel insert, this gasket can hold up to the most extreme pressures. The material comprises two outer layers of graphite foil with a central stainless steel core. These gaskets are designed to withstand up to 1,200 degrees Fahrenheit (650 Celsius), measure 1/64 (.020") inch thich (0.5mm), and have a crush rating of 40%, allowing them to easily seal gaps. Fits Zenoah G23LH/G230RC/G260RC engines. Fits Chung Yang CY23RC / CY26RC / CY27RC / CY29RC / GP290 engines.Fits Zenoah G23LH/G230RC/G260RC engines.Fits Chung Yang CY23RC / CY26RC / CY27RC / CY29RC / GP290 engines.