Supertech 30mm Single Groove Inconel Exhaust Valves for VW EA888, +2mm Oversized, 8 pcs.

High-Performance Inconel Exhaust Valves for VW EA888

Supertech engine valves are engineered for high-performance street and racing applications, offering exceptional strength, heat resistance, and precise fitment. Production begins with a one-piece forging, where the head is formed by a slow two-step process to maintain optimal grain flow of the material. Each valve undergoes multiple stages of CNC machining, stress-relieving heat treatments, and nitriding hardening or application-specific coatings. Final grinding and our proprietary superfinishing process...

With over 30 years of experience in developing valves for racing, Supertech combines this extensive expertise with state-of-the-art manufacturing and testing technology, including ultrasonic inspection, X-rays, laser measurement, and finite element analysis (FEA). In collaboration with top engine builders, we conduct continuous testing to refine each valve for high flow, extreme durability, and first-class performance.
This valve features a single groove lock slot, a concave face profile, and an oversized diameter (+2mm), with an overall length of 101.80mm. Manufactured to precision standards, it ensures optimal airflow and long-term reliability. Features

Single groove lock slot design for secure valve retention

Oversized (+2mm) diameter valve for optimal flow
Concave face design enhances combustion efficiency

Overall valve length of 101.80mm for proper fit and seating

High-performance materials for strength, durability, and thermal stability

Benefits

Improved airflow and volumetric efficiency

Consistent performance at high pressures and RPMs

Reduced wear and extended valve train life

Ideal for naturally aspirated, turbocharged, or nitrous applications

Specifications

Specifications
Engine

Length
101.80 mm

Stem Diameter
5.96 mm

Head Diameter
30.00 mm (+2)

Material
Inconel-Ninomic

Groove Type
Single Groove

Engines

Brand
Engine

Audi
EA113

Audi

EA888

Audi
TFSI

VW
EA113

VW

EA888

VW
TFSI