20B REW For Sale

If you’re searching for one of the most legendary rotary engines ever produced, the JDM 20B REW 3-Rotor Twin-Turbo Mazda Eunos Cosmo Engine is an exceptional opportunity. Highly sought after by collectors, performance enthusiasts, and professional builders, the 20B REW is widely regarded as the pinnacle of Mazda’s production rotary engine technology.

Originally found in the 1990–1995 Mazda Eunos Cosmo, this genuine JDM powerplant features a factory 3-rotor sequential twin-turbocharged configuration paired with its original automatic transmission. Renowned for its smooth power delivery, unmistakable rotary sound, and enormous tuning potential, the 20B REW remains one of the rarest and most desirable Mazda engines ever built.

Whether you’re planning a high-end engine swap, restoring a classic Eunos Cosmo, or building a one-of-a-kind RX-7, this complete 20B engine package provides an authentic foundation for your next project.