Q300 Cat Back Exhaust - Subaru WRX/STI 11-21 Tips:Rolled Titanium Blue Stock mounting points and O2

Stock mounting points and O2 sensor locations - Greater compatibility

This open bellmouth design combined with a larger pipe diameter and smooth bends allows the turbocharger to exhale exhaust gases with fewer restrictions and turbulence

Invidia R400 HS15STI5GM4ST

Made in USA

grade 304 Stainless Steel  (with the exception of their titanium systems of course) is selected for all piping

Q300 Cat Back Exhaust - Subaru WRX/STI 11-21 Tips:Rolled Titanium Blue Stock mounting points and O2INVIDIA Q300 CAT BACK EXHAUST Tuned Muffler For optimal flow and enhanced sound Invidia's Q300 tuned muffler systems provide a quieter exhaust sound than both the R400 and N1 Invidia Exhausts. While still keeping volumes in check, their high flow design ensures efficient exhaust flow for optimum engine performance and prevents sacrificing any increases to power or torque. The Q300 mufflers offer a rich, deep, sporty exhaust note which enhances the