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Perrin Catted Downpipe 2002-2014 WRX / 2004-2021 STI

by Perrin
Original price $679.15 - Original price $679.15
Original price
$679.15 - $679.15
Current price $679.15

This is the PERRIN Performance Downpipe. This downpipe provides an unobstructed flow path to allow the exhaust gases to exit freely out of the turbocharger. The design features smooth bends that are combined with a larger piping diameter that is an overall major improvement over the OEM unit to improve both the horsepower and the torque while allowing the turbo to react quicker. 


  • 304 stainless steel construction
  • 3-inch piping diameter
  • Thick .500 CNC cut stainless steel flanges will not warp
  • Brushed stainless finish
  • Clean and precise welds
  • Heat resistant to 1800°F
  • Divorced wastegate flange
  • Smooth bends
  • Allows for an unobstructed flow path for the exhaust gases to escape the turbocharger
  • Designed with an extra built-in O2 sensor behind the turbocharger to mount a wideband O2
  • Increases both horsepower and torque
  • Reduces turbo lag
  • Will fit on the OEM cat-back, or aftermarket cat-back exhaust system
  • Built-in high-flow catalytic converter implemented in to the downpipe