B&S Vanguard V-Twin 18HP E-Start Petrol EngineGet your equipment back to work with an authentic Briggs and Stratton small engine. Our Vanguard 18. 0 Gross HP engines offer an excellent power to weight ratio. This ensures that you get maximum performance without sacrificing comfort and useability. The model boasts 570 CC, a 2. 83 in. (71. 88 mm) bore, and 2. 76 in. (70. 10 mm) stroke sending power to a robust 1 in. by 3 shaft. Your new Briggs and Stratton engine is backed by a history of