GrimmSpeed 3in Downpipe to Stock Cat-Back Adapter

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  • Regular price $57.00
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GrimmSpeed 3-Inch Downpipe To Stock Cat-Back Adapter. This adapter will allow you to adapt and properly seal an aftermarket 3-inch downpipe to a 2.5-inch OEM or OEM-like cat-back exhaust.  


  • CNC laser-cut steel construction
  • Designed with a flared adapter transition 
  • Provides a smooth connection from a 3-inch aftermarket downpipe to a 2.5-inch cat-back exhaust system
  • Flanged for an OEM donut gasket
  • Simple bolt-on construction
  • Will not obstruct exhaust flow
  • Provides a leak-free seal
  • Includes new hardware for the installation