These over axle pipes are recommended to be used with the Borla Axle-Back system and X-Pipe to complete a Cat-Back system. Built from premium T-304 stainless steel, superior to T-400 series (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Best of all, Borla stands behind every over axle pipe with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. Additional Attributes: GTIN: 00808422605212 Construction: All Welded Gauge: OEM Inlet Inside Diameter: 2.750 in. Material: T-304 Stainless Steel Off Road Use Only: No Tip / Outlet Finish: N/A Tube Diameter: 2.750 in. Extened Information: Emissions : Emission verification to be determined in ACES, vehicle application data. Life Cycle Status: Available To Order Packaging: Quantity of Each: 1 Package UOM: EA Dimension: 61 x 16 x 13 inches