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mountune High Flow Exhaust, Focus ST 2013-2017
mountune High Flow Exhaust, Focus ST 2013-2017

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Product Code: 2363-CBE-AA


mountune High Flow Exhaust, Focus ST 2013-2017


mountune has been engineering exhaust systems for years with the objective towards increased power and response coupled with an enhanced exhaust tone and appearance. Our Focus ST (C346 ST) High Flow Exhaust system is manufactured from 2.5” , AISI 304 Stainless Steel (EN58E) mandrel bent tubing with lazer cut flanges. All muffler assemblies are robotically TIG welded AISI 304 Stainless Steel for long life under extreme performance and feature consistent internal diameter throughout the entire length of the assembly. To ensure improved performance while controlling sound, each muffler includes a three- layer Hybrid Synthetic sound absorption packing that eliminates droning, booming, and other undesirable tones. Tubing diameter also has a major impact on sound quality and careful consideration was given to size and performance. We have also incorporated slip fit connections at various strategic points to allow for easy installation and adjustment.

  • Manufactured from AISI 304 2.5” mandrel bent Stainless Steel tubing
  • TIG welded construction
  • AISI 304 Stainless Steel hanger assemblies
  • Mufflers feature consistent internal diameter
  • 3 Layer Hybrid Synthetic Muffler packing effective to 900c
  • Large 4” Rolled Edge, Polished Stainless Steel Tips with mountune logo
  • Full Width Rear Hanger ensures stable tip location
  • Heavy duty "boss" type clamps
  • Meets 95db Standard
  • Does not affect Ford vehicle warranty
  • CAD Engineered and designed
  • Limited Lifetime Warranty

Average Rating: 5 of 5 Total Reviews: 21 Write a review »

  0 of 0 people found the following review helpful:
Great quality, not a whole ton of grunt. July 30, 2017
Reviewer: dave  
As usual an exceptionally well made unit. I didn't do the install myself, so can't comment on that. No instructions included, not that they're really needed. I replaced an MBRP XP system that had too much boom for my liking. This system is only a little louder than stock. With the symposer deleted, it's pretty tame, but you can hear it's aftermarket. Not loud or boomy, you won't turn heads when you get on the gas. You also will not have any issues having a conversation at highway speeds. Overall, not bad, just a tiny bit more noise on the inside would be better, as I like you use my ears to know my shift points. Have not installed my downpipe yet, so we'll see how much that changes.

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  0 of 0 people found the following review helpful:
Exceptional Product May 21, 2017
Reviewer: Jake S. from Clive, IA USA  
Not only was it easy to install, minus one broken bolt, it sounds great.  Not loud and obnoxious like most after market exhaust.   This is a great exhaust if you want to keep your car a sleeper.

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  0 of 0 people found the following review helpful:
Cat-Back Exhaust April 21, 2017
Reviewer: Jon White from Michigan  
Typical outstanding manufacturing quality from Mountune. Exhaust is very quiet and exactly what I wanted. If you want something that makes noise then this is not for you. Exhaust is a true straight-through system but huge resonators remove all drone, resonance, and 4cyl bumble-bee sound. It sounds like stock until you're at WOT where you can then hear some high-flow exhaust sound. The sounds you hear on existing Youtube videos are very precise to how it sounds in person.

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  0 of 0 people found the following review helpful:
looks good, sounds good, runs good March 31, 2017
Reviewer: Robert Jackson from Midland, TX United States  
Some issue with ford installing the exhaust but this cleared quickly and I could not be more pleased - no info on specs with this installed after the engine upgrade to the 275 was done on the focus st but I do believe I feel the difference - well worth it to have the whole package

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  0 of 0 people found the following review helpful:
Amazing Quality March 13, 2017
Reviewer: Brennan Hudak from Cincinnati, OH United States  
This exhaust is exactly what I was looking for. It fits the bill for oem+ quality. It took me a minute of fiddling with it to get it fitting perfectly, but well worth the hassle. This this is extremely high quality and has the perfect tone. It's very deep and not overly loud. There is ZERO drone at all, its quiet as can be when cruising on the highway.

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