Brand new aftermarket replacement rebuild kit. Measurement Size: 39mm Dia. Piston and rings, wrist pins, clips. Preinstalled Intake/ Exhaust valves. Carefully check the goods appearance, size, shape, compatibility, and then compare your original goods before ordering, the picture show more detail and the picture is of the actual item that you will receive. E will not accept items for return that have been installed, used or fitted in any way under any circumstances. Hope you can understanding. They have never been mounted or used in anyway. Guaranteed to be in perfect condition. If have any question about this item, please send message with us, we will try to answer all the question you may have.