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GrimmSpeed Subaru 3" Downpipe Adapter - 02-14 WRX / 04+ STi



Vehicle Fitment:
2002-2014 Subaru WRX
2004-2018 Subaru STi

Works with both flat-style gaskets and donut gaskets. Flared out at one end to be just shy of 3" so this adapter will not block air flow. Fits all 2002-2014 WRX and 2004-2018 STi models. Ships worldwide. Buy yours at STM!

Kill that exhaust leak for GOOD!
GrimmSpeed has worked with endless amounts of aftermarket gaskets, and exhaust leaks seem to be an all-too-common issue with most modded Subaru's. 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.

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 they are flared out at one end to be just shy of 3" so that, unlike other adapters, this one will not block flow!
  • 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 (Bolts included)
  • Will Not obstruct exhaust flow like other adapters (Flared end guarantees smooth exhaust flow)
Install Note:
Adapter is only inteded to be used for connecting aftermarket 3" Downpipe to OEM style catback. It can not be done in reverse.

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