GrimmSpeed Resonated Cat Back Exhaust 2011-2021 Sedan WRX / STI

This is the GrimmSpeed Cat-Back Exhaust System. GrimmSpeed has combined premium materials, along with a larger piping diameter and smooth bends to provide the performance enthusiast with a satisfying result in terms of both power and sound. This exhaust system has been specifically designed to fit sedan models and will come with new gaskets, hardware, and GrimmSpeed's exhaust hangers to make this exhaust system ready for the installation.  

DETAILS:

• Resonated version (quieter than the noon-resonated)
• Custom dual-outlet mufflers 
• Quad 3.5" double-wall angle-cut tips
• 304 stainless steel construction
• 1/2" thick-cut flanges
• Designed with a flex section
• Includes custom polyurethane hangers to reduce movement and to keep your exhaust in place
• TIG-welded
• Provides an aggressive exhaust note
• 3" piping diameter frees up the flow path to reduce spool while increasing power and torque 

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