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PRODUCT DESCRIPTION
Product details
High Performance Sodium Filled Inconel Exhaust Valves for BMW B58B30
Supertech engine valves are engineered for high-performance street and racing applications, offering exceptional strength, heat resistance, and precise fitment. Production starts with a one-piece forging, where the head is shaped through a slow two-stage process to maintain optimal grain flow of the material. Each valve undergoes multiple stages of CNC machining, heat treatments for stress relief, and nitriding hardening or specific coatings for each application. Final grinding and our proprietary super-finishing process…
With over 30 years of experience in developing race-winning valves, Supertech combines this extensive expertise with cutting-edge manufacturing technology and testing, including ultrasonic inspection, X-rays, laser measurement, and finite element analysis (FEA). In collaboration with top engine builders, we conduct continuous testing to perfect every valve for high flow, extreme durability, and world-class performance.
This valve features a single groove lock slot, a concave face profile, and standard diameter, with an overall length of 100.10mm. Crafted to precision standards, it ensures optimal airflow and long-term reliability. Features
Single-groove lock slot design for secure valve retention
Standard valve diameter for optimal flow characteristics
Concave face design improves combustion efficiency
Overall valve length of 100.10mm for proper fitment and seating
High-performance materials for enhanced strength, durability, and thermal stability
Benefits
Improved airflow and volumetric efficiency
Consistent performance under high pressures and RPMs
Reduced wear and extended valve train life
Ideal for naturally aspirated, turbocharged, or nitrous-fed applications
Specifications
Length: 100.1mm
Groove type: Single groove
Stem diameter: 5.95mm
Head diameter: 28.5mm (standard)
Material: Inconel-Nimonic / Sodium-filled
Engines
BMW B38B15
BMW B48
BMW B58B30
Mini B38
Mini B48
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