This crankshaft is a direct replacement for the stock 43mm crankshaft installed in all Kasea 90cc engines or any 90cc 2 stroke engine with a 43mm crank.
Installation of a 52mm cylinder and this 45mm crankshaft will increase your engine's displacement to just under 100cc's.
..
![Crankshaft Assembly [100cc]](https://www.adlyparts.com/image/cache/catalog/11400-SKO-00_0509-150x150.jpg "Crankshaft Assembly [100cc]")