Created to be the most reliable blow off valve system available, the Type-RS's state of-the art design allows for greater performance in a compact size. Improved response and increased pressure are achieved through carefully selected spring rates and a large 40mm valve. The real unique feature of the Type-RS blow off valve is the CNC machined 8 discharge ports that draw in the surrounding air to amplify the blow-off sound. The Type-RS is compatible with the standard GReddy Blow-off Valve flanges. GReddy Type-RS Blow Off Valve Features: - Compact frame that set new standards for blow off valves - 8 discharge ports that draw in surrounding air and release a unique discharge sound - 40mm, hard-anodized valve for increased airflow - High-quality diaphragm and short stroke significantly increase response - Dual spring system promoted response and allows for high boost pressures - Optional discharge adapters for rerouting discharged air - Uses the same two-bolt flanges as the Type S and Type R valves