For those of you who purchased a BORLA(r) "S-Type" system, PN 140791 or 140791BC and want to step it up to the ATAK(r) sound, replace the front resonators with this set. Each resonator is built from premium T-304 stainless steel, superior to T-400 series knockoffs (such as 409) to give you the best in performance and duarbility. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. As with all BORLA(r) products, it is covered by the famous Million Mile Warranty. Use with BORLA(r) S-Type systems 140791 and 140791BC to the ATAK(r) sound level Attributes GTIN: 00808422606950 Brand Name: Borla Construction: All Welded Grade Type: Performance Material: T-304 Stainless Steel Extended Information Country of Origin: United States Emissions : Racing or Pre-Emissions Use Only Life Cycle Status: Available To Order Packing Information Quantity of Each: 1 Package UOM: EA Dimension: 37 x 13 x 21 inches Weight: 26 lb