The bore seems generally ok with a few light surface marks (see pictures). I have not removed the barrel have not checked the big end or main bearings.
I have never run the engine and it has been kept indoors in dry storage. The engine is complete with generator, oil pump and a carburetor. If you want an engine for a ZR50 I have a separate listing for a ZR50 barrel and cylinder head to enable you to convert it. Please message me if you have any queries at all. The item "Suzuki TS50 engine with carburettor" is in sale since Monday, October 8, 2018. This item is in the category "Vehicle Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Complete Engines".The seller is "drclaudebarker" and is located in Redruth. This item can be shipped to United Kingdom.