GSC Power-Division +1mm Super Alloy Exhaust Valve for 4B11T
+1mm - 30mm
| Stem Diameter (mm) | Overall Length (mm) | Head Diameter (mm) |
| 5.5 | 105.85 | 30.00 |
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.
WARNING: This product can expose you to chemicals including Nickel (Metallic), which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. More information on California Proposion 65 can be found on Proposion 65 Warnings and OEHHA websites.