Our exclusive big bore kit is now available for all case reed engines (typically known as a 47cc engine). Kit includes a high compression 49cc, 44mm four port machined and polished cylinder with a billet aluminum dome head shell. There are three colors to choose from: Polished, Red, or Blue.

We are also including a boost ported & windowed racing piston set, 12mm full circle crank with wrist pin and bearings, gaskets and hardware. This will increase acceleration, offer better cylinder cooling, and look great!

Note: Big Bore Kit is not assembled as shown in the above pictures. Instructions included.