A four-cylinder engine has the highest power-to-excess weight ratio of all bike engines but in addition has the bottom vibrations and best stability due to very small firing intervals. There are diverse configurations of 4-cylinder engines determined by the angle among the cylinders: Derailleur: an assembly of levers, generally cable https://bike-engine-types83692.canariblogs.com/party-bike-arizona-an-overview-49919316