For off-road applications, this kit is designed to improve mid and upper RPM torque, making it an ideal upgrade for vehicles with forced induction. The mandrel-bent 2.5"
X-pipe is 16-gauge 304 stainless steel, and it includes stainless steel T-bolt clamps. The slip-fit design bolts directly to factory exhaust pipes, and the kit can be installed to factory exhaust manifolds (no catalytic converter) or to Hooker EO headers (#520-6138 and #520-6138-1). High-flow extension tubes with O2 connections are included for a complete installation using stock routing.