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A '''Twin cylinder''' [[motorcycle]] is distinguished from other engines by having two driving [[piston]]s and [[connecting rod]]s to the engine's drive shaft. The cylinders operate with one piston at the top of a stroke while the other is at the bottom of a stroke whether in a [[two stroke]] or [[four stroke]] engine thus creating a engine balance. Twin cylinder motorcycles can have a single or dual [[exhaust system]]. It can be four stroke or two stroke in configuration. In some instances a two cylinder, two stroke can have 2 spark plugs with only one active. | |||
==Types== | |||
* [[Straight-two]]: has its cylinders arranged in a single row. It is often improperly referred to as a "straight twin". A true straight twin (or parallel twin) engine uses a common crank pin for both cylinders (small displacement [[Honda]], [[Triumph]]). | |||
* [[V-twin]]: has the cylinders are arranged in a V configuration ([[Harley]], [[Ducati]], large displacement [[Honda]]). | |||
* [[Boxer twin]]: two cylinders arranged on opposite sides of the crankshaft ([[BMW]]). | |||
Β | |||
[[Category:Engine Configurations]] | |||
[[Category:Motorcycles]] |