Technical information
Product details & specifications
GSC Power-Division +1mm Super Alloy Exhaust Valve for 4B11T
+1mm - 30mm
For those running high horsepower, high EGT set ups that need a valve that will last in 2000°F conditions. The Super Alloy Exhaust valves have chrome polished stems to create a smooth, durable finish for added life and better lubricity, especially when paired with the GSC Manganese bronze valve guides. Strength, heat resistance, and performance are engineered into every valve. Under head dish is maximized for weight savings while swirl polished and backcut heads promote better air flow without sacrificing durability.
| Stem Diameter (mm) | Overall Length (mm) | Head Diameter (mm) |
| 5.5 | 105.85 | 30.00 |
Explore related parts: 4B11T Evo X Valves · Lancer Evolution X (4B11T).