HKS GTIII-4R Turbine 0.81 A/R WG

The HKS GTIII-4R Turbine features a 0.81 A/R (Area/Radius) ratio for its exhaust housing, which is a key measurement that affects how quickly the turbocharger spools up and how much top-end power it can produce. This specific A/R ratio is chosen to balance responsiveness with high-RPM airflow, making it suitable for builds aiming for significant power gains without excessive lag.

This turbine is built with robust materials designed to withstand the high temperatures and pressures found in performance engine applications. The internal wastegate is integrated to precisely control boost levels, helping to protect your engine from over-boosting and ensuring consistent power delivery. HKS is known for its focus on performance tuning, and this turbine reflects that with its advanced design and attention to detail in its construction. It's a substantial component intended for serious engine builds where maximizing airflow and power output is the primary goal.

When considering a turbocharger like the GTIII-4R, it's important to note that it is a significant upgrade and will likely require supporting modifications to your engine's fuel system, intake, and exhaust to achieve its full potential and ensure reliability. This includes proper tuning to match the new airflow characteristics. Please be aware that this part is not CARB approved and cannot be shipped to California.