GSC +1mm Super Alloy Exhaust Valve Set 6.6mm Stem Toyota 2JZ-GE / GTE (30mm) GSC2069-12
Extreme Heat-Resistant Exhaust Valves for High-Boost 2JZ Builds
The GSC Power-Division +1mm Super Alloy Exhaust Valve Set with a 6.6mm stem is engineered for Toyota 2JZ-GE and 2JZ-GTE engines operating under intense conditions. Featuring a 30mm head diameter, these valves are built to handle high horsepower and elevated exhaust gas temperaturesup to 2000°F.
Precision-Machined for Flow, Strength, and Longevity
Each valve includes a chrome-polished stem for smoother motion and increased wear resistanceespecially when paired with GSC Manganese Bronze Valve Guides (GSC3113-12). The underhead dish is optimized for weight reduction, while the swirl-polished and backcut head design enhances airflow without compromising durability.
Required Components for Proper Fitment
Must be used with GSC3113-12 Valve Guides and GSC1029 Valve Guide Seals to ensure correct installation and optimal performance.
Product Features
- Super alloy construction withstands thermal stress up to 2000°F
- +1mm oversized head for increased flow (30mm diameter)
- 6.6mm stem diameter for enhanced strength and guide compatibility
- Chrome-polished stem improves lubricity and longevity
- Swirl-polished and backcut head promotes efficient airflow
- Underhead dish reduces weight for better valvetrain response
Specifications
| Stem Diameter | Overall Length | Head Diameter |
|---|---|---|
| 6.6mm | 99.20mm | 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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