Borla - CrateMuffler - Resonator for Lower Sound - 2.5" - Center
If you want to lower the sound pressure level (SPL) of your new CrateMufflers™, you can install the Resonator Option. The Resonator Option is designed to attenuate overall sound. This is perfect for customers looking to reducing the sound level 2-3 dB. This straight-through design will not degrade the performance of your vehicle.