Chainsaw Repair

It probably is a 52mm kit, but I would think that he would heavily promote the "brand new piston and cylinder" instead of dancing around it.  I have heard that some of those kits can be quite good, but I think he's hoping to sell it to someone who won't notice what's in there.

Here it is in action in some soft wood.  Not very impressive.  I wonder how long it will take those rings to seat...