Compatible with Subaru WRX STI Header Prosport Unequal Length Stainless Steel Header

Drawing from 30 years of experienced bending & welding, our headers are made with less joints for a stronger and smoother interior surface. Strict quality control and a mandrel bend process is more resistant to cracks while delivering more horsepower! Be sure to check out the dyno results sheet. Our header & up-pipe added 13ft/lbs Torque and 11 Horsepower to the wheels!! Our headers are a work of art, you might be tempted to just hang them on the wall and stare at them all day! For faster spool up of your turbo and increased horsepower and torque our header will get you down the track faster! They are fully constructed out of T304 stainless steel, including the 1/2" thick flanges! This set INCLUDES the pictured up pipe which uses our exclusive 3 bolt flange design between the manifold and up pipe providing a stable connection without air leaks. We also include new studs, gasket and hardware so you can install it right out of the box. With a jaw dropping 45mm inner pipe diameter you can be sure your spent exhaust will exit in a hurry. You have to see this header in person to appreciate it, the welds are just incredible!