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Grimmspeed LIMITED Downpipe Catted-(Subaru WRX/STI 2002-2007 / Forester XT 2004-2008)

Grimmspeed LIMITED Downpipe Catted-(Subaru WRX/STI 2002-2007 / Forester XT 2004-2008)

Good Vibes Performance is proud to offer you the best upgrades brought to you by GrimmSpeed. Whether it's a boost controller, replacing gaskets or you're upgrading your up-pipes/down-pipes, we have it here. Get those numbers up and share the Good Vibes.

This is the GrimmSpeed Limited Catted Downpipe. This downpipe is the result of countless hours invested in research and development to provide the performance consumer with a quality product guaranteed to deliver performance. This is a direct replacement of the OEM downpipe that is highly restrictive and leaves much room on the table for improvement. The GrimmSpeed unit combines smooth bends and a larger piping diameter to remove as much turbulence from the exit path of the turbocharger which will add more horsepower, and more torque while reducing the turbo lag. 




  • 304 stainless steel construction
  • 1/2" thick 3D contour flanges
  • 3" piping diameter
  • 3D CAD designed to determine the contours and clearance from the firewall 
  • Divorced wastegate design for optimal flow
  • Designed with a secondary O2 bung for those adding a wideband O2 sensor
  • FARO arm design
  • Built-in high-flow 300-cell metallic substrate catalytic converter
  • Expertly TIG-welded
  • Includes new exhaust gaskets and hardware included for the installation 
  • Made in the USA




  • Flanges designed with recesses for each tube
  • 3D contour to smoothly transition the irregular shape of your internal wastegate outlet into the divorced tube for tighter boost control




  • Tune required for optimal performance

  • **Lead time 3-5 weeks**


    Brand: GrimmSpeed
    Includes Catalytic Converter: Yes
    Installation Hardware Included: Yes
    Mouth Design: Divorced Wastegate
    Piping Coating: No
    Piping Flex Joint: No
    Piping ID: 3.00in
    Piping Material: 304 Stainless Steel
    Piping Taper: No
    Tuning Required: Yes
    Mfgr. Warranty: Lifetime
    Condition: New Product

    Subaru Forester
    Sports 2.5 XT
    2008 Subaru Forester Sports 2.5 XT
    2004 Subaru Forester XT
    2005 Subaru Forester XT
    XT Limited
    2006 Subaru Forester XT Limited
    2007 Subaru Forester XT Limited
    2008 Subaru Forester XT Limited
    XT Premium
    2005 Subaru Forester XT Premium
    Subaru Impreza
    2002 Subaru Impreza WRX
    2003 Subaru Impreza WRX
    2004 Subaru Impreza WRX
    2005 Subaru Impreza WRX
    2006 Subaru Impreza WRX
    2007 Subaru Impreza WRX
    WRX Limited
    2006 Subaru Impreza WRX Limited
    2007 Subaru Impreza WRX Limited
    2004 Subaru Impreza WRX STI
    2005 Subaru Impreza WRX STI
    2006 Subaru Impreza WRX STI
    2007 Subaru Impreza WRX STI
    WRX STI Limited
    2007 Subaru Impreza WRX STI Limited
    WRX TR
    2006 Subaru Impreza WRX TR
    2007 Subaru Impreza WRX TR



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