When 425 HP just isn't enough for your Jeep, unleash an additional 25-35 HP with American Racing Headers' new long tube header systems. Made with the highest quality 304 stainless, these direct bolt-in systems are manufactured to provide outstanding performance and a great fit. All systems come with standard with 3/8" thick flanges, merge style collectors with scavenger spikes, severe duty metallic substrate cats, ball/socket connections and grade 8 hardware. And provides easy access to the Transmission pan.