Fit For Ducar 56mm Head Gasket For YX 140cc For Pit Dirt Bike ATV Quad Motorcycle Spare Parts vehicle fit for Ducar YX 140cc For Pit Dirt Bike ATV Quad Custom 56mm inner diameter standard YX140 cylinder head bore size Multi-layer composite construction delivers outstanding resistance compression sealing Oil temperature material prevents leakage engine power loss under RPM Accurate pre-punched bolt holes coolant passage cutouts align with engine assembly Thickness maintains compression ratio for steady torque output during offroad track riding