At approximately 2.5 HP this bicycle engine gets about 100 to 150 mpg and can hits speeds of 35 MPH or more. 4 cycle engines require little maintenance. Simply add gas and oil and the engine is ready to operate. Make regular oil changes and your engine will last you for many years to come. 78 mm tapered shaft or 5/8 keyed straight shaft.Stock muffler and carb installed. Clutch included with tapered shaft (not included with 5/8). Engine Type Air-cooled 4-Stroke OHV Single Cylinder. Max Power(kw/r/min) 1.5 KW / 2.5 HP / 6800. Fuel Consumption(L/h) 0.78. Listing and template services provided by inkFrog. The item "49cc Gas Powered 4 Stroke Engine" is in sale since Wednesday, April 10, 2019. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Other Bike Components & Parts". The seller is "bicycle-engines" and is located in Bozeman, Montana. This item can be shipped to United States.