Mountune High Flow Cat-Back Exhaust System (14+ Fiesta ST)





  • Direct Fit Replacement
  • Improves Horsepower and Torque
  • Helmholtz Resonator Reduces Unwanted Drone
  • 2.5" Diameter
  • Legendary Mountune Quality
  • Stainless Steel Construction with CNC Welds
  • Stylish 3.25" Double Wall Dual Polished Tips
  • Will fit OEM, and most Aftermarket Downpipes.
  • Fits 2014+ Fiesta ST

Mountune has been engineering exhaust systems for years with the objective towards increased power and response coupled with an enhanced exhaust tone and appearance. Their Fiesta ST High Flow Cat Back Exhaust system is manufactured from 2.5” AISI 304 Stainless Steel (EN58E) mandrel bent tubing with dual 3.25 double walled, polished stainless steel tips.

Additionally, a Helmholtz chamber design is utilized in the rear silencer to cancel out unwanted frequencies. Utilizing this system, despite being more complicated and expensive to manufacturer, ensures back-pressure remains low, providing the optimum in terms of performance while removing as many of the unwanted frequencies and drone as possible.