GSC +1mm Super Alloy Exhaust Valve – Toyota 2JZ-GE / GTE (30mm) – GSC2067-01
High-Temperature Super Alloy Exhaust Valve for Demanding 2JZ Builds
The GSC Power-Division +1mm Super Alloy Exhaust Valve is purpose-built for Toyota 2JZ-GE and 2JZ-GTE engines operating under extreme conditions. With a 30mm head diameter and advanced alloy composition, this valve is designed to thrive in setups pushing high horsepower and elevated exhaust gas temperatures—up to 2000°F.
Engineered for Strength, Flow, and Longevity
Each valve features a chrome-polished stem for improved lubricity and reduced wear, especially when paired with GSC’s manganese bronze guides. The underhead dish is optimized for weight reduction, while the swirl-polished and backcut head design enhances airflow without compromising durability.
Product Features
- Designed for high horsepower and high EGT environments
- Super alloy construction resists thermal fatigue up to 2000°F
- Chrome-polished stem improves lubricity and wear resistance
- Swirl-polished and backcut head promotes better airflow and combustion
- Underhead dish reduces weight for improved valvetrain response
- Compatible with OEM and GSC upgraded valve guides
Specifications
| Stem Diameter | Overall Length | Head Diameter |
|---|---|---|
| 6mm | 99.00mm | 30.00mm |
Fitment:
- 1993–1998 Toyota Supra 3.0L Twin Turbo DOHC (2JZ-GTE)
- 1993–2002 Toyota Supra 3.0L Non-Turbo DOHC (2JZ-GE)
- 1991–1997 Toyota Aristo 3.0L Twin Turbo DOHC (2JZ-GTE)
- 1992–2004 Toyota Crown / Chaser / Mark II / Cresta 3.0L DOHC (2JZ-GE)
- 1998–2005 Lexus GS300 3.0L DOHC (2JZ-GE)
- 2001–2005 Lexus IS300 3.0L DOHC (2JZ-GE)
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