GSC +1mm Super Alloy Exhaust Valve Set – Toyota 2JZ-GE / GTE (30mm) – GSC2067-12
Extreme Heat-Resistant Exhaust Valves for High-Output 2JZ Builds
The GSC Power-Division +1mm Super Alloy Exhaust Valve Set is built for Toyota 2JZ-GE and 2JZ-GTE engines operating under intense conditions. Featuring a larger 30mm head diameter and advanced alloy composition, these valves are engineered to perform in setups pushing high horsepower and elevated exhaust gas temperatures—up to 2000°F.
Engineered for Strength, Flow, and Longevity
Each valve includes a chrome-polished stem for enhanced lubricity and reduced wear—especially when paired with GSC’s manganese bronze guides. The underhead dish is optimized for weight savings, while the swirl-polished and backcut head design promotes smoother airflow without compromising durability.
Product Features
- Built for high horsepower and elevated 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 enhances airflow and combustion
- Underhead dish reduces weight for improved valvetrain response
- Optimized for use with GSC manganese bronze 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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