Showing 1–16 of 50 results
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For rotary enthusiasts seeking the raw, high-revving character that made Mazda rotary engines legendary, this 12A Bridge Port (P-Port) Engine Assembly delivers an uncompromising performance experience.
Built by Renown Racing, this race-inspired Mazda 12A rotary engine features a full peripheral port (P-Port) configuration designed to maximize airflow, throttle response, and top-end power. Unlike turbocharged setups that rely on boost, this naturally aspirated engine focuses on pure mechanical performance, rewarding drivers with instant response, screaming RPM capability, and the unmistakable sound that only a peripheral port rotary can produce.
Whether you’re building a dedicated race car, track weapon, circuit racer, or classic rotary project, this engine offers the aggressive performance characteristics serious rotary enthusiasts demand.
With its competition-focused design and renowned rotary pedigree, this 12A Bridge Port (P-Port) Engine Assembly represents one of the most exciting naturally aspirated rotary engine configurations available.
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$2,500.00
The 13B 6-Port Turbo Motor – Streetported & Dowel Pinned is a professionally assembled rotary engine built for enthusiasts who demand reliable performance and future power potential. Combining Mazda’s proven 13B rotary platform with street porting and dowel pin reinforcement, this engine offers the ideal balance of drivability, responsiveness, and durability for both street and performance applications.
Whether you’re building a turbocharged Mazda RX-7, upgrading an RX-8 swap project, or replacing a worn engine with a stronger foundation, this setup is designed to handle the demands of spirited driving and increased boost levels.
The legendary 13B rotary engine has long been celebrated for its compact design, lightweight construction, and exceptional RPM capability. This upgraded build takes those strengths even further, delivering improved airflow, stronger component stability, and the flexibility needed for a wide range of performance goals.
If you’re searching for a rotary engine that combines proven modifications with a fresh assembly and strong upgrade potential, the 13B 6-Port Turbo Motor – Streetported & Dowel Pinned deserves serious consideration.
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$3,000.00
The 13B Cosmo Rotary Engine – In-House Built is a professionally assembled performance rotary engine designed for enthusiasts who demand serious power, reliability, and precision engineering. Built using proven rotary performance techniques, this engine combines upgraded internal components with meticulous balancing to create a package capable of handling spirited street driving, track use, and high-horsepower applications.
Unlike a standard stock rotary engine, this build incorporates several performance-focused modifications, including doweled housings, half-bridge porting, lightened rotors, and a fully balanced rotating assembly. These enhancements work together to improve airflow, increase responsiveness, and support higher RPM operation while maintaining the durability expected from a properly engineered rotary build.
Whether you’re planning a Mazda Cosmo restoration, RX-7 conversion, dedicated track car, or custom rotary-powered project, the 13B Cosmo Rotary Engine – In-House Built offers a strong foundation for achieving impressive performance without sacrificing drivability.
Built by rotary enthusiasts for rotary enthusiasts, this engine delivers the character, sound, and performance that have made Mazda rotary engines legendary worldwide.
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$2,500.00
If you’re searching for a proven rotary engine for your Mazda RX-7 FB project, this 13B Rotary Engine Available – Limited-Time Price Reduction is a fantastic opportunity. Built using a carefully selected combination of desirable early and late-model Mazda rotary components, this rebuilt 13B offers the performance, reliability, and rotary character enthusiasts demand.
Featuring a street-ported 4-port configuration, strong compression numbers, low mileage since rebuild, and upgraded 3mm apex seals, this engine is ideally suited for street-driven RX-7s, weekend performance cars, restoration projects, and custom rotary builds.
Compatible with Mazda RX-7 FB models from 1979–1985, this engine includes both a clutch and flywheel, providing additional value and helping simplify installation. Whether you’re replacing a tired original engine or upgrading to a stronger rotary setup, this rebuilt 13B delivers the perfect blend of classic rotary performance and modern reliability.
For enthusiasts who appreciate authentic Mazda rotary engineering, opportunities like this are becoming increasingly rare.
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$2,500.00
13B Turbo II Streetported & Dowel-Pinned Engine – Boost-Ready Mazda Rotary Performance Engine13B Turbo II Streetported & Dowel-Pinned Engine – Boost-Ready Mazda Rotary Performance Engine
The 13B Turbo II Streetported & Dowel-Pinned Engine is a proven performance upgrade for rotary enthusiasts seeking the perfect balance between street manners, reliability, and serious turbocharged power potential. Built around Mazda’s legendary 13B Turbo II platform, this engine features two of the most desirable modifications in the rotary world: professional streetporting and dowel pin reinforcement.
Designed for enthusiasts who want faster spool-up, improved airflow, stronger top-end performance, and enhanced engine integrity under boost, this engine provides an outstanding foundation for both street-driven and track-focused builds.
Whether you’re restoring an FC RX-7 Turbo II, building a custom rotary project, upgrading an existing setup, or preparing for future power goals, this engine delivers the performance characteristics that have made the 13B Turbo II one of the most respected rotary powerplants ever produced.
The combination of streetporting and dowel-pinning creates a highly desirable package that improves airflow while helping maintain engine stability under demanding conditions. The result is a rotary engine that retains excellent drivability while offering significantly increased performance potential.
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$1,500.00
Finding a genuine running Mazda 12A rotary engine has become increasingly difficult as classic RX-7s continue to gain popularity among collectors, restorers, and rotary enthusiasts. This 1984 Mazda 12A Rotary Engine – Good Compression | Running presents an excellent opportunity to acquire a complete, running rotary engine with good compression, making it an ideal candidate for restoration projects, engine replacements, custom builds, or vintage Mazda preservation.
Originally found in the iconic first-generation Mazda RX-7 (FB), the 12A rotary engine helped establish Mazda’s reputation for innovative engineering, lightweight performance, and high-revving excitement. Decades later, the 12A remains one of the most beloved rotary engines ever produced.
This engine was running prior to removal and has demonstrated good compression, two of the most important factors buyers look for when evaluating a used rotary engine. Whether you’re restoring a classic RX-7 to factory specifications or searching for a solid foundation for a rotary project, this engine offers genuine Mazda rotary heritage and proven functionality.
Sold exactly as shown in the photographs, this engine provides an authentic opportunity to own one of Mazda’s most recog
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$900.00
If you’re searching for an authentic rotary engine for your Mazda RX-7 restoration, replacement project, or classic rotary build, this 1985 Mazda RX-7 12A Engine – Low Miles is an excellent opportunity. Removed from a 1985 Mazda RX-7 equipped with an automatic transmission, this original 12A rotary engine has accumulated only approximately 76,000 miles and shows strong compression numbers.
The legendary Mazda 12A rotary engine is known for its lightweight design, smooth power delivery, unique driving characteristics, and impressive reliability when properly maintained. Whether you’re restoring an FB RX-7 to factory specifications, replacing a worn engine, or collecting hard-to-find rotary components, this low-mileage engine provides a solid foundation.
Included with the engine are the flywheel and counterweight, making this package even more attractive for enthusiasts and builders seeking genuine Mazda rotary components.
With classic first-generation RX-7 values continuing to rise, original low-mileage 12A engines are becoming increasingly difficult to find. This is an excellent opportunity to secure a desirable rotary powerplant before availability becomes even more limited.
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$1,400.00
If you’re searching for a complete rotary engine package for your RX-7 restoration, replacement project, or custom build, this 1994 Mazda RX-7 FD 13B-RW Complete Engine Swap – ECU & Harness Included offers an excellent solution. Removed from a running vehicle and supplied as a complete swap package, this setup includes the engine, ECU, and wiring harness, helping simplify installation and reduce the time required to source additional components.
The legendary Mazda 13B rotary engine has earned its reputation among enthusiasts worldwide thanks to its lightweight design, smooth power delivery, and exceptional tuning potential. Whether you’re bringing an FD RX-7 back to life or planning a custom rotary-powered project, this package provides a strong foundation for your build.
With factory electronics included and a complete engine assembly ready for installation, this swap package is ideal for enthusiasts looking for an authentic JDM rotary powertrain.
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$1,500.00
The 20B Side Housing – Peripheral Port is a premium genuine Mazda component designed for serious rotary enthusiasts building high-performance 3-rotor engines. Whether you’re assembling a turbocharged street monster, a dedicated drag car, or an all-out race build, this peripheral port side housing provides the airflow potential and reliability needed to support substantial horsepower goals.
As one of the most sought-after components in the rotary performance world, a genuine Mazda 20B side housing is a critical foundation for any serious triple-rotor engine project. Designed specifically for peripheral port (PP) configurations, this housing helps maximize airflow into the engine, supporting the high-RPM characteristics and power output that have made the 20B legendary among rotary enthusiasts.
Originally found in the iconic Mazda Eunos Cosmo, the 20B remains one of the most respected rotary engines ever produced. Builders pursuing big horsepower numbers understand the importance of using quality OEM components during assembly, and this 20B Side Housing – Peripheral Port is an excellent choice for maintaining reliability while unlocking maximum performance potential.
Clean, ready for assembly, and suitable for a variety of custom builds, this component is ideal for performance engine rebuilds, race applications, and custom rotary conversions.
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$1,300.00
Give your RX-7 the look it deserves with these Badass Rotor Style Wheels – Mazda RX-7 FD Fitment. Inspired by the iconic shape of Mazda’s legendary rotary engine rotors, these wheels instantly transform the appearance of any FD3S while maintaining the aggressive, motorsport-inspired styling that rotary enthusiasts love.
Whether you’re building a clean street car, a weekend canyon cruiser, a dedicated show vehicle, or a track-inspired project, these rotor-style wheels deliver the perfect combination of visual impact and rotary heritage. Designed specifically for Mazda RX-7 FD applications, they provide the ideal stance and aesthetic that complements the timeless body lines of the FD chassis.
With their distinctive rotor-inspired spoke pattern and aggressive fitment, these wheels are a favorite among rotary enthusiasts looking to stand out from the crowd while staying true to Mazda’s legendary rotary culture.
Available in clean used condition and ready to mount, these wheels are an excellent upgrade for anyone wanting a unique appearance without sacrificing quality or fitment.
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$400.00
Complete FB Rear Taillights – 1981–1985 Mazda RX-7 Immaculate set of rear taillights for 1981–1985 Mazda RX-7 (FB). $400 USD / 550 AUD These are in excellent condition with clear lenses, no cracks, and all mounting points intact. Perfect for a clean restoration or upgrade. ✅ Complete set ✅ Original OEM fit ✅…
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$7,000.00
If you’re searching for one of the most sought-after rotary engine packages ever produced, the DM Mazda 20B 3-Rotor Engine with Rear Diff & Subframe – Complete JDM Package delivers an exceptional opportunity to own a genuine piece of Mazda rotary history.
Removed from a Japanese-market Eunos Cosmo, this complete drivetrain package includes the legendary 20B triple-rotor engine, OEM automatic transmission, rear differential, and complete rear subframe assembly. Whether you’re planning a high-end Mazda RX-7 conversion, a custom rotary swap, a show car build, or simply want to secure a rare collector-grade drivetrain, this package provides an outstanding foundation.
The Mazda 20B remains one of the most desirable rotary engines ever produced. Known for its smooth power delivery, unique three-rotor design, incredible tuning potential, and unmistakable rotary sound, the 20B continues to be the engine of choice for serious enthusiasts worldwide.
Imported directly from Japan and offered as a complete set, this package eliminates the difficulty of sourcing multiple components separately while providing an authentic JDM drivetrain solution.
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$7,000.00
Genuine Mazda 20B 3-Rotor Rotary Engine – RE Cosmo / RX-7
Offered for sale is a genuine OEM Mazda 20B 3-rotor rotary engine, an extremely rare and highly sought-after powerplant originally found in the Mazda RE Cosmo. This engine is suitable for RE Cosmo restorations as well as RX-7 and custom rotary conversions.
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$1,500.00
When rebuilding a Mazda RX-7 FD3S rotary engine, few components are as critical as the rotor housings. The Genuine Mazda RX-7 FD3S 13B-REW Rotor Front & Rear Housing (Brand New, Unused) – MZ0002 provides enthusiasts, engine builders, and restoration specialists with factory-original Mazda rotor housings designed specifically for the legendary 13B-REW twin-turbo rotary engine.
Rotor housings are the heart of rotary engine performance. Their chrome-plated internal surfaces directly influence compression, sealing efficiency, reliability, and overall engine longevity. Worn, damaged, or scored housings can significantly impact performance and compromise the success of even the most carefully assembled engine build.
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$2,200.00
For serious performance enthusiasts, the transmission is just as important as the engine. When horsepower increases and lap times matter, a standard gearbox can quickly become a limiting factor. The HKS 6-Speed H-Pattern Dog Gearbox – Genuine HKS is engineered specifically for high-performance applications where rapid gear changes, durability, and driver engagement are critical.
Built by one of Japan’s most respected motorsport brands, this genuine HKS dog engagement transmission delivers lightning-fast shifts and exceptional strength for demanding street, circuit, drag, drift, and time attack applications. Unlike conventional synchronized gearboxes, a dog box is designed for aggressive driving, allowing significantly quicker shifts while reducing shift lag during competition.
Whether you’re building a high-horsepower Mazda RX-7, RX-8, Toyota, Nissan, or another custom performance platform, this gearbox represents a rare opportunity to own an authentic HKS drivetrain component trusted by professional racers and elite tuners worldwide.
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$7,000.00
The JDM Mazda 20B 3-Rotor Engine with Rear Diff & Subframe – Complete JDM Package is one of the most sought-after rotary engine packages available to enthusiasts, collectors, and performance builders worldwide. Removed from a genuine Japanese-market Mazda Eunos Cosmo and imported directly from Japan, this complete drivetrain package offers an incredible opportunity to own one of Mazda’s most legendary powerplants.
Powered by the iconic 20B triple-rotor engine, this package includes far more than just the engine itself. Included are the OEM automatic transmission, rear differential, and complete rear subframe assembly, making it an ideal foundation for ambitious engine swaps, restoration projects, race builds, or high-horsepower street cars.
The Mazda 20B is widely regarded as the pinnacle of factory rotary engine development. Known for its smooth power delivery, incredible sound, and immense horsepower potential, the 20B remains one of the rarest and most desirable rotary engines ever produced.
