Lifan 125cc 4 Stroke 4 gears Semi auto engine motor (4T313)Product Name: Lifan 125cc 4 Stroke 4 gears Semi auto ngine motor Brand Name: Lifan Warranty: 6 Month It is a brand new Lifan 125cc 4 Stroke 4 gears Semi auto engine motor accessories included Gear Lever,Kick Lever,Intake Manifold etc Specifications: Single cylinder, 4 stroke, 2 valves, OHC racing head, air cooled, 125cc Bore x Stroke: 54mm x 54mm, this is a 'square' engine for best balance between power and torque Valve Sizes: 27mm intake, 23mm