All BBK Performance parts are backed by a 1-YEAR manufacturer’s warranty from the original date of purchase. An optional extended warranty is also available - giving you an additional 2 or 3 years from original date of purchase. Costs for the extended warranty option can be viewed when the item is added to your cart. The manufacturer’s warranty is based on normal use and installation of each product.. BBK After Cat, High Flow Mid Pipe X pipes are made with 2.75 inch CNC mandrel bent tubing for maximum flow over the stock pipe and they are specifically designed to increase performance and horsepower. As an after-cat product they are smog legal as they do not interfere with any emissions controlled parts.. High-Flow Short After Cat X-Pipe Assembly; CNC Mandrel Bent 2.75 in. Tubing; CARB Exempt; Fits OEM Stock Exhaust; Cut And Clamp Required;. Improves Exhaust Flow - Decreases Back Pressure and Adds Throaty, Race-Like Sound. BBK 11-14 Mustang 5.0 High Flow After Cat X Pipe - 2-3/4. 2011-2014 MUSTANG GT 2-3/4 SHORT MID AFTER-CAT X PIPE. High-Flow Short After Cat X-Pipe Assembly. ExhstCrossoverPipe. BBK Exhaust Pipes. Made In The USA. Short Mid Pipes. Exhaust Pipes. Exhaust Pipe

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