CARBURETOR REPLACEMENT: You will get the fairly reliable and durable carb to help deliver optimum engines performance and to give your ATV the new power and torque. Perfect choice to replace your defective carb assemblyPREMIUM QUALITY: This carburetor is manufactured to the highest production standards which means that it is good at mixing fuel and air, keeps your engine running smoothly and prevents engine from lacking of oil or spillingFITS: For 50cc 70cc 90cc 110cc 125cc atv dirt bike scooter and compatible with go kart horizontal with 4 stroke engine. Fits most atv go kart dirt bike, such as tao tao, buyang, coolsports, aim-ex, kazumaEngine Opening O.D.: 19mm, Bolt Hole Spacing (engine side): 48mm (on center), Outer Diameter(air filter side): 37mm/ Inner Diameter (air filter side): 33mm24-MONTH WARRANTY: If for any reason at all, you are not fully satisfied with the carburetor assembly, you can contact us through amazon message for carefree REPLACEMENT or REFUNDFitments: 4 Stroke 4