GrimmSpeed 3" Downpipe Adapter - Aftermarket DP>OEM Catback Subaru WRX/STI/LGT/FXT/OBXT - Dirty Racing Products

GrimmSpeed 3" Downpipe Adapter - Aftermarket DP>OEM Catback Subaru WRX/STI/LGT/FXT/OBXT


Regular price$57.00
Shipping calculated at checkout.

The 3" Downpipe Adapter - Aftermarket DP>OEM Catback - Cut from Steel and hand welded these pieces were born tough. With the ability to work with both flat style gaskets AND donut gaskets they cannot be matched. If that wasn't enough we flared out one end to just shy of 3" so that unlike the competitors, our adapter will not block flow!

Exhaust leaks seem to be an all-too-common issue with most modded Subarus. They tend to spring up out of nowhere and cause hours of troubleshooting headaches. The most guaranteed leak you will get though is if you run an aftermarket 3" downpipe to an OEM or OEM like 2.5" Exhaust. Compare our adapter to the competition and you will immediately see why we offer the best solution to finally end that pesky leak.

A Final solution to pesky problems, it's what you can expect from GrimmSpeed

  • Flared Adapter Transition! (Creates a smooth transition from your 3" downpipe to your OEM midpipe)
  • Flanged for OEM Donut Gasket
  • Indestructible Steel CNC Laser cut construction
  • Simple bolt on installation. (With bolts included)
  • Will Not obstruct exhaust flow like other adapters. (Flared end guarantees smooth exhaust flow)

NOTE: GrimmSpeed 3in. Gasket and OEM Subaru Donut Gasket SOLD SEPARATELY

Fitment Note: Adapter is only intended to be used for connecting aftermarket 3in Downpipe to OEM style catback. It can not be done in reverse.

Always verify compatibility before purchase.


  • 2004+ Subaru STI
  • 2002-2014 Subaru WRX
  • 2004-2013 Subaru Forester
  • 2005-2009 Subaru Legacy GT
  • 2004-2006 Subaru Baja Turbo
  • 2005-2006 Saab 9-2X

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