... & engine partsEngine vertical/horizontal style, CG/CB, air/water cooled, electric/kick start, 2/4-stroke, 50cc-250cc Cylinder, crankcase, piston ... , fuel tank, handle bar, switch, levers, gauge, muffler, lights, electric devices, wheel, brake, shock absorber, chains...etc. .3. Motorcycle Accessories. Helmet, bumper ...