The Mazda 13B Street-Ported Rotary Engine – Dowel Pinned Build is a professionally assembled performance rotary engine designed for enthusiasts who want a proven combination of power, durability, and drivability. Featuring street porting for increased airflow and a dowel-pinned block for added structural integrity, this fresh-build 13B offers an ideal foundation for serious street, track, or custom rotary projects.
Whether you’re building a high-performance Mazda RX-7, restoring a classic RX-3 or RX-4, or creating a one-of-a-kind rotary-powered vehicle, this engine delivers the legendary characteristics that have made Mazda rotary engines famous worldwide. The street-port configuration enhances breathing and horsepower while maintaining excellent drivability, making it one of the most popular upgrades among experienced rotary enthusiasts.
Built for reliability and performance, this engine is ready for installation and prepared to serve as the heart of your next rotary-powered project.
The Mazda 20B 3-Rotor Engine – Clean Build is one of the most iconic and desirable rotary engines ever produced, offering a rare combination of smooth power delivery, high-revving performance, and unmistakable Mazda engineering heritage.
This engine is built around the legendary 20B triple-rotor platform—widely respected in the rotary community for its strength, tuning potential, and unique driving character. Unlike standard 13B engines, the 20B delivers more displacement, more torque, and a noticeably stronger mid-range, making it a favorite for serious performance builds.
This Mazda 20B 3-Rotor Engine – Clean Build comes as a professionally refreshed unit with multiple new internal components, making it a strong foundation for high-performance applications, RX-7 swaps, drift builds, or collector-grade projects.
Whether you’re a rotary enthusiast chasing big horsepower or a builder looking for something truly rare, this engine stands out as a premium, hard-to-find option in today’s JDM market.
For enthusiasts restoring one of Mazda’s most iconic rotary-powered sports cars, finding an authentic early-production engine can be one of the most difficult parts of the project. This Mazda Savanna RX-7 SA22C GT – 12A Rotary Engine (P9-165 G S55) represents a rare opportunity to acquire a genuine first-generation RX-7 rotary engine removed from an original Japanese-market Savanna RX-7 GT.
The legendary 12A rotary engine helped establish Mazda’s reputation for innovative engineering and lightweight sports car performance. Compact, high-revving, and uniquely smooth, the 12A remains one of the most sought-after rotary powerplants among collectors, restorers, and vintage JDM enthusiasts.
This complete long block assembly offers an excellent foundation for an OEM restoration, period-correct build, museum-quality project, or rotary engine rebuild. As surviving examples become increasingly difficult to source, genuine SA22C engines continue to gain value among collectors worldwide.
New FD3S 13B-REW Rotary Engine Core – Housings, Rotors, Seals, Plates & Shaft | Zero Run Time
For rotary enthusiasts, builders, and restoration specialists, finding a truly fresh foundation for a Mazda RX-7 FD3S engine build is becoming increasingly difficult. The New FD3S 13B-REW Rotary Engine Core – Housings, Rotors, Seals, Plates & Shaft | Zero Run Time offers a rare opportunity to start with brand-new core components rather than rebuilding worn or questionable parts.
Designed specifically for the legendary Mazda RX-7 FD3S platform, this complete engine core package includes the essential internal components required for a premium-quality rotary build. Featuring new rotor housings fitted with power seals, rotors, iron plates, eccentric shaft, and a complete seal package, this assembly provides the ideal starting point for everything from OEM restorations to serious street and track builds.
Whether you’re restoring a collector-grade FD RX-7, building a reliable street car, or planning a high-horsepower performance setup, this zero-run-time engine core eliminates many of the uncertainties associated with used rotary components.
Built around genuine Mazda 13B-REW architecture, this package represents one of the best foundations available for enthusiasts seeking reliability, performance, and long-term durability.
