QA1 Soft Base Valve - .028in Bleed - 0-5 Compression

This is the QA1 Soft Base Valve, specifically the .028 inch bleed version with 0-5 compression settings. It's a single component designed for fine-tuning the internal workings of your engine, often used in applications where precise control over valve action is needed for optimal performance. Think of it as a small but important piece that helps manage how your engine breathes and operates under different conditions.

QA1 is known for making solid parts, and this base valve is no exception. The .028 inch bleed is a specific size that affects how quickly pressure can equalize, which can change the feel and responsiveness of your engine. The 0-5 compression adjustment lets you dial in that behavior to match your specific setup, whether you're building a street car or a dedicated race machine. It's a well-made part that gives you that extra level of control.