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SKU: NEVI-1052-NEO-12 | UPC: 1037721245428
Supertech Nissan RB25 DOHC NEO Inconel Exhaust Valves - Set of 12 (30.65mm +1mm Head)
The Supertech NEVI-1052-NEO-12 Inconel Exhaust Valves are the premium choice for high-performance Nissan RB25 DOHC NEO engine builds. These +1mm oversized (30.65mm head) Inconel valves offer superior heat resistance and strength, making them ideal for high-boost turbo applications, aggressive camshafts, and high-horsepower RB25DET setups. Sold as a complete set of 12, they provide exceptional durability under extreme temperatures and stresses while improving flow over stock valves.
Key Features
- Inconel Material: Extreme heat resistance and strength for turbocharged and high-RPM applications
- +1mm Oversized Head (30.65mm): Increased flow for better performance
- Precision Machined: 5.96mm stem and 97.65mm overall length for perfect fitment
- Full Set of 12: Complete exhaust valve set for RB25 inline-6 engines
- Supertech Quality: Trusted by professional engine builders for maximum reliability
Specifications
| Specification | Detail |
|---|---|
| Part Number | NEVI-1052-NEO-12 |
| Valve Type | Exhaust |
| Head Diameter | 30.65mm (+1mm Oversize) |
| Stem Diameter | 5.96mm |
| Overall Length | 97.65mm |
| Material | Inconel |
| Quantity | Set of 12 |
| Application | Nissan RB25 DOHC NEO Engines |
| Installation | Professional Cylinder Head Work Required |
| Country of Origin | United States |
| Warranty | Limited (Supertech) |
| Shipping Weight | Approx. 2-3 lbs |
What's Included
- Set of 12 Supertech Inconel Exhaust Valves
- Technical Specifications
Product Notes
- Designed for high-boost turbo RB25 builds and aggressive performance applications
- +1mm oversized head improves airflow and performance
- Requires professional valve job and proper installation clearances
Installation Notes
- Requires precision cylinder head machining and valve job
- Professional machine shop installation strongly recommended
- Check valve-to-piston clearance and spring pressures
This Part Fits
| Engine | Notes |
|---|---|
| Nissan RB25 DOHC NEO | RB25DET NEO engines found in Skyline R33/R34, Stagea, and other performance models |
Why Choose Supertech Inconel Exhaust Valves?
- Superior heat resistance for high-boost and high-temperature applications
- Precision manufacturing for reliable high-RPM performance
- Proven in professional RB25 engine builds worldwide
Frequently Asked Questions
-
Q: Are these intake or exhaust valves?
A: These are Inconel Exhaust Valves for the RB25 DOHC NEO engine. -
Q: What does +1 mean?
A: +1mm oversized head diameter for improved flow compared to stock. -
Q: Do I need a machine shop?
A: Yes – proper valve guide installation, seat cutting, and clearance checking is required.
Shipping & Handling
- Method: UPS / FedEx Ground
- Availability: In stock ships same or next business day
- Packaging: Secure protective packaging
- Weight: Approx. 2-3 lbs
Supertech
Located in San Jose, California, in the heart of Silicon Valley, Supertech was born from the same fertile ground as many other innovative companies. We utilize cutting-edge technology to fuel our growth and deliver the highest performance valves and valve train components available. Why Choose Supertech? Over 30 Years of Experience: Our legacy in the industry ensures top-quality products. Superior Performance: We provide valves and valve train components specifically designed for the racing market. Versatile Applications: Ideal for various types of racing, including: Drag Racing Rally Road Racing And more! Custom Solutions: If you can't find the perfect fit, we are always willing to work with you to custom manufacture the ideal solution for your specific needs. CUTTING EDGE TECHNOLOGY Trusted by the best in the industry, Supertech is committed to leveraging the latest advancements in technology to enhance performance and reliability. Experience the difference with our prod...
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