Sharkroad Silencer Valve for 4.0/4.5/ 3.0 inch Muffler

This silencer valve can effectively reduce the QB intensity emitted by the muffler.
After testing, it can reduce up to 9DB. （4.5 inch muffler test）
Before installation: 91-93DB
After installation: 84-88DB

Suitable for sharkroad 4.0 inch and 4.5 inch mufflers.

Not Installed👇

After Installation👇