
Tuning Chapter】The Mugen Complete Car Trinity: RR, RZ, and RA
🌟【Tuning Chapter】The Mugen Complete Car Trinity: RR, RZ, and RA
Original: Honda Magazine | Japanese Car Enthusiast Magazine | Updated: November 03, 2024
#About High-Performance Legends You Admire
🌟 Introduction to Complete Cars 🌟
A "Complete Car" refers to a fully upgraded vehicle, modified before sale, with legal registration and road certification. Popular examples include Mercedes-AMG and Subaru's WRX STi. Mugen, Honda's performance branch, brought this concept to life with three iconic models: Mugen RR, RZ, and RA.
The Origin of Mugen
Established in 2004 by Honda's investment, M-TEC inherited the legendary "Mugen" name, founded in 1973 by Soichiro Honda's son. Known for delivering high-quality aftermarket parts, Mugen transitioned to producing Complete Cars with factory support. Unlike typical concept cars, these vehicles featured exclusive components unavailable for individual purchase.
🚗 Mugen RR: The Legend Begins (2007)
Based on the Honda Civic Type R (FD2), the Mugen RR debuted in 2007 as a limited-edition marvel. Only 300 units, finished in Milano Red, were sold out in 10 minutes. Priced at ¥4.77 million, it was the ultimate naturally aspirated 2.0L car of its time.
Key Features:
- Engine Power: Enhanced K20A with 240 HP (+15 HP) and optimized torque.
- Weight Reduction: Aluminum hood (-3 kg) and carbon fiber bumpers.
- Aerodynamics: Carbon rear diffuser and brake cooling ducts.
- Handling: Wider 8J forged wheels and recalibrated suspension.
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Interior: Custom Recaro seats and a shortened gear shifter.
🚗 Mugen RZ: Power Meets Precision (2012)


Launched alongside the CR-Z (ZF2) refresh, the Mugen RZ paired lightweight hybrid tech with a supercharged engine. Limited to 300 units, this Indigo Blue Pearl masterpiece sold for ¥4.449 million.
Key Features:
- Engine: LEA-MF6 engine with centrifugal supercharger for 156 HP (+30%).
- Aerodynamics: Full Mugen body kit for enhanced airflow.
- Suspension: Showa-developed shocks and Swift springs.
- Braking: Larger front discs (300mm) for durability.
- Interior: Blue-black themed cabin with a boost gauge.
🚗 Mugen RA: The Kei-Car Contender (2016)
Derived from the S660, the Mugen RA targeted Japan's Kei-Car market. Though restricted to 64 HP due to regulations, it featured superior handling and aesthetics, priced at ¥2.89 million.
Key Features:
- Chassis: Perfect MR layout with 45:55 weight distribution.
- Suspension: Bilstein coilovers for precision control.
- Interior: Premium red leather seats and exclusive Mugen badging.
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Wheels: Lightweight forged alloys by BBS.
Reflections on the Trinity
The RR, RZ, and RA illustrate Mugen's philosophy: pushing boundaries while respecting constraints. From RR's raw power to RA's precision engineering, these cars cater to enthusiasts across the spectrum.
💡 Takeaway: Vehicle upgrades should balance performance, durability, and cost. Whether a track weapon or daily driver, each choice reflects a unique vision.
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