GRWA Exhaust Valve: The Art of Mastering Sound

    In today's world where individuals seek personalization and driving excitement, the GRWA exhaust valve can precisely control the sound output of the muffler, allowing your car to seamlessly switch between roaring engine noise and quiet driving.

Valve Types: Various Options to Meet Your Individual Needs

Classified by the direction of the bag:
（1）Positive Pressure Exhaust Valve: It utilizes the positive pressure gas generated by the turbocharger to blow the lever through the valve port, thereby achieving an outward movement from the inside to control the opening and closing of the exhaust passage. This design can emit a more thrilling exhaust sound during acceleration, enhancing the immersive driving experience.

（2）Negative Pressure Exhaust Valve: It utilizes the negative suction force in the vacuum pipe of the vehicle to drive the lever to move inward. While maintaining the low noise driving experience, it can also release excitement at the moment needed, making the driving experience rich and varied.

By type of power source:
（1）Vacuum exhaust valve: Consists of a single valve and a remote control wire, driven by the vehicle's vacuum system for remote control, easy to operate. The single valve comes in various standard sizes ranging from 51mm to 102mm to meet different vehicle models and modification needs. There are four styles of positive pressure open/closed and negative pressure open/closed, making sound control more flexible.

（2）Electric exhaust valve: Uses an electric drive method, directly controlled by electrical signals to open and close the exhaust valve, with fast response and precise control. The complete set of electric exhaust valve system integrates advanced control modules, making sound adjustment more intelligent and personalized.

（3）Size and Style:
      The standard sizes of single valves include 51mm, 60mm, 63mm, 70mm, 76mm, 89mm, and 102mm.
 There are four styles of single valves: positive pressure open/positive pressure closed and negative pressure open/negative pressure closed.

Special Products:
     （1）Titanium alloy exhaust valve: lightweight, high strength, and corrosion-resistant properties, the top choice for high-end car modifications.
     （2）Brand exclusive series: specially designed for luxury brands such as Mercedes-Benz, BMW, and Audi, ensuring perfect compatibility and making every driving experience a unique pleasure.

Material and Process:
     The body is made of SS304 precision casting, combined with the silica sol process, ensuring high precision and smooth surface. The valve body has undergone shot blasting, acid washing and other processes, which can prevent corrosion and wear, and is durable. The surface of the top pull-up is carefully polished, showing the sense of quality. The application of four-axis stamping process (computer numerical control processing) ensures that the valve disc runs smoothly and will not get stuck, providing stable performance and good user experience.

Working Principle:
    Positive Pressure Exhaust Valve: The exhaust is blown by the positive pressure generated by the turbocharger, and the lever moves from inside to outside to control the muffler.
    Negative Pressure Exhaust Valve: The exhaust is sucked by the negative pressure in the car's vacuum pipe, and the lever moves from outside to inside to control the muffler.

    Choose GRWA Exhaust Valve, personalized control brings you a more diverse and rich driving experience. We share the joy of modification with you.