Check the listing for details. 1320 Performance ultra quiet SHORT QW resonator muffler universal 3" inlet out. Color: polished 304SS, Condition: New. Listed at 104.00 USD. This is the shorter version of our standard length QW Resonator around 21 inch and our standard QW is around 25 inches. you can also make it shorter by cutting down inlet and outlet piping. 1320 Performance Patented Ultra Quiet quarter wavelength Resonators have become the preferred choice of exhaust fabrication professionals looking to effectively reduce exhaust noise and drone from their performance exhaust setup Our QW design have been proven to reduce 18-22% more drone than standard none QW design. Each Quarter Wavelength resonator features straight through design to reduce back pressure. Our resonator are densely packed with our premium multi-layered sound absorption materials & PREMIUM 304 Stainless Steel construction, polished to a beautiful mirror finish.For full size and measurement please see pictures.This is the shorter version of our standard length QW Resonator around 21 inch and our standard QW is around 25 inches. you can also make it shorter by cutting down inlet and outlet piping. 1320 Performance Patented Ultra Quiet quarter wavelength Resonators have become the preferred choice of exhaust fabrication professionals looking to effectively reduce exhaust noise and drone from their performance exhaust setup Our QW design have been proven to reduce 18-22% more drone than standard none QW design. Each Quarter Wavelength resonator features straight through design to reduce back pressure. Our resonator are densely packed with our premium multi-layered sound absorption materials & PREMIUM 304 Stainless Steel construction, polished to a beautiful mirror finish.For full size and measurement please see pictures.