The Adjustable Coaxial Pivot (ACP) is a special arrangement of the swingarm pivot allowing for easily changing its height, since the pinion and the swingarm pivot are the same. It is best matched with the PT180 solution, which greatly enlarges the free space in the rear of the engine. Coaxial pivot is a highly debated topic in the motorcycle community: it has benefits and downsides that have to be weighted against the specific application. This solution allows for having longer swingarms and getting rid of chain (or belt) tensioning.