Invidia Q300 Cat Back Exhaust - Subaru WRX 11-14/STI 08-14 (Hatch) 14-0143 Outer Diameter: 76mm

Outer Diameter: 76mm

or coolant systems

Important Note: Designed to reuse OEM Bosch 044 check valves

Max Gains: +27% HP

Invidia Q300 Cat Back Exhaust - Subaru WRX 11-14/STI 08-14 (Hatch) 14-0143 Outer Diameter: 76mmINVIDIA 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