This is a used Bartolone rees cage 30.5cc engine with very good compression; it starts without issues. I am selling it because I have other engines with larger displacement. Please keep in mind that it is used but in very good condition. It comes with a Walbro 990 carburetor, though the carb might need cleaning; I had it in storage for several months for a project I never got around to, and I am now clearing out my workshop. Please examine the photos carefully before buying or contact me if you have questions. My loss is your gain; no returns or refunds. This engine can be used in Losi, HPI, B5, Kraken, FG, Rovan, Redcat—basically any 1/5 scale 2-stroke model.