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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: 18 Write a review »

  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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  0 of 0 people found the following review helpful:
Beautiful workmanship. February 27, 2017
Reviewer: J. Ong from Los Angeles, CA United States  
Entire exhaust system is beautifully made. Nice deep mellow note. Not overbearing! Installed at Mountune shop in Carson, CA. Excellent service and installation at a fair price. Thanks Dan for your excellent service.

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  0 of 0 people found the following review helpful:
No rice rocket sound or drone February 12, 2017
Reviewer: @dankwise_ from Escondido , CA United States  
After intensely looking for the best sounding exhaust I chose the Mountune cat back. So glad I did. The construction is top notch, appears beautiful and sounds amazing. It paired perfect with the other mountune mods I got and I couldn't be happier.  When you're just cruising it's quiet and reserved but as soon as the petal goes down everyone around knows you have power under the hood. No drone whatsoever or any undesirable sounds. The worst thing you can do to a focus st is put a subpar exhaust on it (ricer sounds 😢)

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  0 of 0 people found the following review helpful:
ST Cat back exhaust January 15, 2017
Reviewer: George Ellies from Plymouth, MI United States  
Everything looks very well made and was well packed.
Could You please send me directions for installation.

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  0 of 0 people found the following review helpful:
Great customer service too! December 18, 2016
Reviewer: Julie Brown from Corona, CA United States  
Very helpful and accommodating. They went the extra mile adding personal touch..  Would definitely buy from them again  :)

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