The Eunos Cosmo screams down the track. The audience grips their seats as the 300-horsepower Mazda 20B rotary engine blares out its power-band to the crowds. The 20B rotary engine holds an almost legendary status, as so few are available in the world. Much of the inventory left is found through reliable sellers on eBay. Mazda's 20B engine utilizes a triple-rotor design that offers 2.0 liters of displacement. The engine is factory-fitted with a twin-turbo setup; each turbo produces .7-bar of pressure. The 20B design expanded from the Wankel 13B rotary engine. The 13B features a twin-rotor design that produces 1.3 liters of power. Earlier 13B models, based off 12A rotary engine predecessor, produced less than 135 horsepower. Before Mazda ended production, the engine was factory-fitted with a twin-turbo system. The 2002 13B engine manages 280 horsepower. Mazda rotary engines use a simplistic design that allows you to produce high numbers in power through smaller builds. Put your confidence in a 20B rotary engine and build a race-ready track machine.Shop the large inventory of motors, parts, accessories, and complete Mazda engines!