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Kooks 3 in. Off-Road H-Pipe (11-14 GT w/ Long Tube Headers)

AmericanMuscle no longer carries the Kooks 3 in. Off-Road H-Pipe (11-14 GT w/ Long Tube Headers). Please check out 2010-2014 Mustang X-Pipes for Long Tube Headers for an updated selection.
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Features & Details

  • Aggressive, Deep Exhaust Note
  • Accelerated Exhaust Flow for an Enhanced Performance, Power and Torque
  • Dual-Outlet Straight Through Round Mufflers for No-Droning
  • Made of T304 Aerospace-Grade Stainless Steel for Maximum Strength
  • High-Performance Chrome Finish for Ultimate Protection Against Rust
  • Must be Used with Kooks LTHs to Provide Optimal Performance
  • CARB Non-Compliant
  • Direct Fit Replacement Custom Upgrade
  • Limited Lifetime Warranty
  • Fits All 2011 – 2014 Ford Mustang GT Models with Long Tube Headers
Aggressive Mustang Exhaust Note. Transform your docile, restrictive stock factory exhaust system by mounting the Kooks 3" Off-Road H-Pipe. The pipe's design is 49-State EPA certified and deliver high performers while letting out an aggressive, but crisp exhaust sound that a GT must have.

Enhanced Horsepower and Performance. This H-pipe by Kooks is not only effective in eliminating the obnoxious droning sound, but also provides increased horsepower and performance. It is designed with a dual- outlet tubes w/ round mufflers, that breathes an adrenaline-rush horsepower. Its 3" diameter improves exhausted flow to boost the throttle further.

Superiorly Constructed. Kooks high-performance H-pipe utilizes T304, aerospace-grade 3" Stainless Steel to produce a sturdy custom upgrade. It is built to withstand high exhaust temperatures of up to 1500 degrees. Also, it has a chrome coat finish that protects the exhaust tube from wear-n-Tear.

Direct, Bolt-On Replacement Upgrade. This high-performance off-road H-pipe is engineered to replace your stock factory manifolds. It is a ready, bolt-on upgrade, easily installed using simple tools. However, for better performance, it should be used with Kooks LTHs.

Warranty. Kooks guarantees their H-Pipe to be of high quality and offers the original purchasing client, a Limited Lifetime Warranty.

Application. This Kooks 3 in. Off-Road H-Pipe is machined to fit all 2011 – 2014 Mustang GT models.

Fitment: 2011 2012 2013 2014 Details

MPN# 11413400

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) 3" Off-Road H-Pipe
  • (2) Exhaust Clamps
Installation Info
Tech Specs
Will it fit my Mustang?

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Questions & Answers (3)

3 Top Rated Questions

What kind of tone or sound level difference does this have versus the catted H pipe? Also, I have the kooks LTH and catted H pipe on the car now, can the off-road replace the catted H pipe without a new tune?

  • The main difference when switching from a catted h-pipe to an off roadh-pipe would be the volume, the tone of the exhaust would be the same. The off-road h-pipe would make the exhaust louder than the catted h-pipe. Unfortunately, this mid pipe will need a tune since you will be deleting the catalytic converters. 

Helpful (0)

Its the same size as the pipes leading to the axel back. How do I get the h pipe on?

  • The Kooks 3 in. Off-Road H-Pipe is reduced at the connection point to your cat-back to allow it to slide inside of the exhaust to be clamped in.

Helpful (0)

would this fit with the BBK long tube?

  • Unfortunately, the Kooks 3 in. Off-Road H-Pipe would not work with the BBK Long tube headers due to them being designed to work for the Kooks long tube headers.

Helpful (0)
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