Carburetor Vacuum Diaphragm for V-type 2-cylinder Motorcycles Virago XV400 535 XV535 SR 250 Vmax1200 XJR1200 Replacement vacuum diaphragm designed for use with carburetors on V-twin and 2-cylinder motorcycles.Compatible with models including Virago XV400, XV535, SR250, Vmax1200, and XJR1200.proper fuel delivery and engine performance by maintaining correct vacuum pressure within the carburetor system.Constructed to match specifications for fit and function.Installs directly into existing carburetor housing without modification.Helps restore smooth engine and throttle response when replacing worn or damaged diaphragms. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.