1. 49cc mini motor air cooled racing engine capable of achieving 40mph dependant on user weight and terrain. 2. Engine is complete with high performance cylinder head, plug, powder coated metal pull start, air filter and 14mm carburettor,Balanced crank, balanced flywheel, ported piston windows, uprated CVT transmission unit. Name:engine motor Cylinder Numbers: Single cylinder Type:49CC single cylinder air-cooled engine Stroke: 2-stroke Gas-oil Mix Rate: 25:1 Bore: 44mm Gear Box Reduction Rate: 3.1: 1 Displacement: 49cc Start Way: Recoil pull start,new style recoil,easy to pull start Recoil Starter Material: New style easy pull starter Cooling: Air forced cooling Sprocket Size: 14 teeth fit T8F chain Air Filter: Performance high flow racing air filter Spark Plug Size: L7T L7TC Model Name:IPE44F-6 Item Type:engines Fits (For the reference)For 49CC 2 Stroke Pocket Bike, Mini Dirt Bike, ATV or Scooter. Colour:Yellow Material:Metal Package Contents: 1 * engine motor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.