This product is a Keihin FCR 40mm carburetor designed for off-road motorcycles, specifically for 2008-2012 KTM 250XCF-W, 250SXF, 250, 450 XCF, and SXF models. It features a 4-stroke engine type, mechanical choke, and is made of aluminum. The carburetor has a single barrel and is not universally fitment, making it a specific and tailored part for the mentioned motorcycle models.