What is suzuki s40 engine?

The Suzuki S40, also known as the Suzuki Boulevard LS650, is powered by a 652cc, four-stroke, air-cooled, single-cylinder engine. The engine has a bore and stroke of 94.0 x 94.0 mm and features a SOHC (single overhead camshaft) design with a two-valve-per-cylinder setup. The engine produces 31 horsepower at 5,400 rpm and 37.0 Nm of torque at 3,500 rpm. The engine is mated to a five-speed manual transmission and features a wet multi-plate clutch. The overall weight of the engine is 171 kg, and it has a fuel capacity of 12.5 liters. The Suzuki S40 engine is known for its reliability, low maintenance, and smooth power delivery, making it popular among riders who prefer a more relaxed riding style.