Injen Downpipe w/ Cat | 2002-2007 Subaru WRX/STI (SES1202DP)

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2002-2007 Subaru WRX/STI Downpipe w/ Cat by Injen

Injen Technology has examined the stock down-pipe and found prominent potential on improving the OE design by using mandrel bent stainless steel for optimum flow and corrosion resistance. TIG-welded by hand for race proven durability and endurance and eliminating any possibility of cracking during heat cycles. All of the Injen downpipes are uniquely designed to increase exhaust velocity for improved horsepower and torque. Just like all of our other performance parts, we dyno test our Down Pipes in-house and proudly build them in Pomona, CA.


  • High Performance downpipe with included hi-flow catalytic convertor
  • Full 76MM piping made from premium 304 SS Mandrel-Bent Tubing
  • Beautiful CAD Designed 304 stainless steel investment cast turbo bellow
  • Turbo Bellow includes the upper O2 sensor bung
  • Hand Crafted and TIG Welded to Perfection for Strength and Durability


  • Increased horsepower and torque output with this simple bolt-on downpipe


  • 2002-2007 Subaru WRX/STI

What's In The Box?

  • 1 - Downpipe


  • Injen's Limited Manufacturer's Warranty

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