Unlocking meaningful power from the SR20DET requires a turbocharger that balances response with higher airflow capacity. The Tomei ARMS MX8270 Journal Bearing Turbocharger Kit (part number TB401A-NS08B) is a complete bolt-on solution developed for the Nissan 180SX and Silvia S13, S14, and S15, capable of supporting approximately 450 horsepower with proper supporting modifications and tuning.
The kit centers on a CNC-machined billet compressor wheel that improves airflow and efficiency compared with traditional cast designs, paired with a durable journal bearing center section. A multi-rate billet actuator is included along with six springs, allowing fine adjustment of boost pressure to suit different engine setups and driving preferences. Engineered as a direct-fit upgrade for the SR20DET, the MX8270 includes the necessary gaskets, oil lines, hardware, and related components for installation, making it a practical high-performance option for enthusiasts moving beyond the factory turbo.
This turbocharger is well suited to S-chassis builds seeking stronger mid-to-high range power while retaining usable street drivability. At Terra Firma Automotive, we supply this genuine Tomei ARMS MX8270 Journal Bearing Turbo Kit as a proven Japanese upgrade for SR20DET-powered 180SX and Silvia models. Whether you are building a responsive street car or a higher-output track-oriented setup, the MX8270 delivers the airflow and adjustability expected from Tomei’s ARMS series. Choose Terra Firma Automotive for authentic Tomei turbocharger systems that elevate the performance of the legendary SR20DET.
- Genuine Tomei ARMS MX8270 Turbocharger Kit
- Part Number: TB401A-NS08B
- Application: Nissan SR20DET
- Journal bearing (J/B) center section
- CNC billet compressor wheel
- Compressor inducer approx. 59.0 mm / exducer approx. 76.2 mm
- Multi-rate billet actuator
- Includes 6 springs for boost adjustment
- Supports approximately 450 HP with supporting mods
- Bolt-on style upgrade for SR20DET
- Improved airflow and efficiency versus stock turbo
- Includes gaskets, oil lines, and necessary hardware
- Strong mid-to-high range power potential
- Trusted Tomei ARMS series engineering
- Available from Terra Firma Automotive
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