This product is a USED OEM Yamaha YZ450F Keihin stock carburetor assembly, designed for off-road motorcycles with a 4-stroke engine. Made of aluminum, this carburetor features a single barrel design and a mechanical choke type. It is specifically designed for Yamaha motorcycles and has a throttled feature for precise control. The carburetor is a genuine OEM part, ensuring quality and compatibility with the vehicle.