Pace Setter downpipes are made from 16-gauge 3''-diameter mandrel-bent tubing for maximum flow. Polished Armor Coat finish is standard on all downpipes to lower underhood temperatures. Each downpipe features a T304 stainless steel flex joint to minimize exhaust leaks and for increased durability. Pipes bolt to bottom of stock turbo housings and retain stock O2 sensor location. Can be used with OE cat or 3'' custom system. Race-only 3" outlet included.