Motorcycle carburetor automatic startup choke designed for 50 CPI REX models.This unit integrates with the carburetor system to assist in cold engine starts by automatically adjusting the fuel mixture.It eliminates the need for manual choke , providing a smoother and more start-up process.The component is built to match the specifications of compatible and motorcycles, proper fit and function.Installation follows standard procedures for carburetor-mounted choke systems. Disclaimer: This is not an part.References to brands or models are used only to illustrate compatibility.