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817637 - Flowmaster American Thunder Cat-back Exhaust System - default Image
817637 - Flowmaster American Thunder Cat-back Exhaust System - additional Image
817637 - Flowmaster American Thunder Cat-back Exhaust System - additional Image
2013-18 Ford Focus ST 2.0L- American Thunder Cat-back Exhaust System 817637YouTube Button

Flowmaster American Thunder Cat-back Exhaust System

2013-2018 Ford Focus ST with turbocharged 2.0L engine.

PART# 817637

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Fits 2013-2018 Ford Focus ST with turbocharged 2.0L engine.

Overview

Flowmaster's American Thunder cat-back exhaust system for the 2013-2018 Ford Focus ST hatchback is perfect for the person looking for moderate to aggressive sound levels with all of the performance benefits that you would expect from Flowmaster. This bolt on DOR (Dual Out Rear) emissions legal system for the 2.0L L4 turbocharged engine features a specially tuned muffler and resonator, 2.25 inch mandrel bent stainless steel tubing, and 3.25 x 3.75 inch oval polished stainless steel tips. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.

Features:

  • Lifetime Limited Warranty
  • Great Performance Sound
  • Dyno Tuned For Maximum Performance
  • Stainless Steel Construction

Specs

2WD/4WDFWD
BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Emission Code5
Exhaust SeriesAmerican Thunder
Heat ShieldNo
Inlet Diameter (in)2.25
MaterialStainless Steel
Muffler Part NumberKit Only
Muffler Quantity1
Muffler SeriesTuned Resonator
Outlet Diameter (in)2.25
Product TypeExhaust Systems / Kits
Single DualSingle
Sound LevelModerate/Aggressive Sound
System TypeCat-back System
Tip Diameter (in)3.25 x 3.75
Tip Length (in)7
Tip Quantity2
Tubing Diameter (in)2.25
Part Number817637

Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Fits 2013-2018 Ford Focus ST with turbocharged 2.0L engine.

Applications

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