The SmartCarb is the culmination of more than 45 years of development. Its pedigree comes from a long line of single-circuit, flat-slide carburetors, including the Lake Injector, Pos-a-Fuel, Ei Blue Magnum, and Quicksilver. The SmartCarb combines the best features from earlier flat-slide, variable-venturi carburetor designs and incorporates design features developed by Technology Elevated, making it a real world solution to satisfying emissions regulations and OEM performance requirements in small engine applications worldwide. Technology Elevated is currently focused on the off-road 2-stroke and 4-stroke powersports market, offering 25, 28, 36, 38, and 40mm SmartCarb sizes, and is capable of competing directly with electronic fuel injection for both passing emissions regulations and meeting performance requirements. Each Smart Carb is set up to your specific engine depending on fuel type, oil mixture ratio, and engine modifications. Please allow up to 10 days for shipping.