BOXER ENGINE

An engine configuration wherein the cylinders are horizontally opposed to each other at 180°, with all the pistons linked by a single central crankshaft, reciprocating in the same plane. It is also called an ‘opposed-cylinder’ or a ‘flat’ engine. A boxer engine is always a multi-cylinder one and can only have an even number of cylinders. If the engine has two cylinders, one of them is parallel and opposes the other one. BMW are by far the most renowned for using flat engines, but they are also seen on some Honda models such as the Gold Wing and Valkyrie.