The turbo outlet is a common restriction point on factory RB20 and RB25 exhaust systems. The Tomei EXPREME Turbo Outlet (part number TB6020-NS06A) is a direct-fit replacement designed for these engines, offering a larger internal volume and smoother flow path while remaining compatible with both the stock turbocharger and Tomei ARMS turbo units.
Manufactured with an enlarged pipe diameter and carefully formed smooth internal walls, this outlet increases internal volume from approximately 750 cc on the stock piece to around 1050 cc. The exit diameter grows from 60.0 mm to 76.3 mm, helping reduce backpressure and support improved turbo response and exhaust efficiency. A practical design detail—a dimple at the flange bolt location—improves access to the fasteners and simplifies installation compared with the tighter factory layout. The result is a straightforward bolt-on upgrade that delivers measurable flow benefits without requiring custom fabrication.
This EXPREME turbo outlet is a useful supporting modification for RB20 and RB25 engines in Skyline, Stagea, and related platforms, whether the car remains relatively mild or is being prepared for higher output. At Terra Firma Automotive, we supply this genuine Tomei EXPREME Turbo Outlet as a well-engineered, practical exhaust component. Choose Terra Firma Automotive for authentic Japanese performance parts that help RB20 and RB25 engines breathe more efficiently.
- Genuine Tomei EXPREME Turbo Outlet
- Part Number: TB6020-NS06A
- Application: Nissan RB20 and RB25 engines
- Direct bolt-on replacement
- Compatible with factory turbo and Tomei ARMS units
- Exit diameter: 76.3 mm (stock 60.0 mm)
- Internal volume: approximately 1050 cc (stock ~750 cc)
- Smooth internal walls for improved flow
- Reduced exhaust backpressure potential
- Dimple feature for easier flange bolt access
- Supports better turbo response and efficiency
- Suitable for street and performance builds
- Straightforward installation
- Trusted Japanese exhaust component engineering
- Available from Terra Firma Automotive
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