The Vintage K&B Sport 40 .40ccm R/C Nitro Inboard Engine is a classic 2-stroke engine designed for boats and watercraft. Made by KB in the United States, this engine features a flywheel start and is compatible with universal brands. With a big block displacement and vintage appeal, this engine is perfect for enthusiasts looking to power their RC model vehicles with a touch of nostalgia. The engine includes a Perry Carb, flywheel, and muffler for a complete and functional package.