aFe Power Twisted Steel Loop Delete D/P & Y-Pipe SS 2in/2.5in 12-14 Jeep Wrangler (JK) V6 3.6LThese aFe Atlas XP Y pipes feature a true 2 Into 1 mitered merge collector that eliminates dead space that can cause turbulence and hinder the flow that formed collectors are prone to produce. They are manufactured from aluminized steel, feature mandrel bent piping, and high quality OEM style flanges with band clamps are used for a bolt on, leak free installation. The Y pipes are available with high flow 300 cell catalytic converters for better flow