OS BGX-1 engine has two crankshaft ball bearings. Side exhaust, ringed piston, Schnuerle porting (AKA Schnuerle scavenging). Two chamber expansion-type muffler (included). Safety prop nut assembly. Remote needle valve. This product includes expansion-style muffler w/adaptor and screws. Backplate-style (radial) engine mount. One hardware bag, screws, blind nuts, lock (split) washers to mount the engine. One safety prop nut assembly. One woodruff key. One #8 glow plug. One set of instructions, poster, and decal. One Remote Needle Valve and Hardware to mount the needle valve.

Fuel with 5%-10% nitromethane and 18% MINIMUM lubricant content (20% is recommended). ALL 5%-15% fuels we carry meet these requirements.