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MBRP Long Tube Header and Off-Road H-Pipe Kit - 1-7/8 in x 3 in. (11-14 GT)

Market Price $1,228.49 You Save 5% ($58.50)
Our Price

$1,169.99 (kit)

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  • Item 390868
  • MPN# S7231304

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Features, Video & Details

  • Increases Horsepower and Torque
  • Raspy Race Car Growl
  • Long Tube Header Design
  • Free Flowing 1-7/8" Mandrel-Bent Tubing
  • T304 Stainless Steel Construction
  • Non-Catted Shorty H-Pipe Included
  • Intended for Off-Road, Track Use Only
  • Compatible with MBRP Street, MBRP Race or OEM Cat-Back
  • Fits All 2011-2014 GT Mustangs

Review & Installation Video

Review & Install Video

You Have the Power. Three inch free-flowing mandrel-bent tubing will get your 5.0L engine rocking, expelling exhaust fast, boosting fuel efficiency and providing long lasting performance for your Mustang GT. This Long Tube and H-Pipe System by MBRP includes 1-7/8" primary tubes crafted from T304 stainless, providing optimal flow to the GT powertrain and maximizing overall performance.

Dyno Proven Construction. This Exhaust Kit has been through endless hours of Dyno and street testing. Every part has been modified to perfection and offers ultra long durability. Crafted from high quality T304 stainless steel, this 1-7/8" x 3" Long Tube Header with H-Pipe features mandrel-bends for superior exhaust flow. Upgrading with this kit will deliver a killer sound and performance combo, making you wish you took the plunge earlier.

Installation. This MBRP Header and Mid Pipe Kit offers everything you'll need in one box for a custom fit, including 1-7/8" x 3" Long Tube Headers, Off-Road H-Pipe, front and rear O2 extensions, all the necessary hardware and detailed instructions.

Recommended Upgrade. To realize the full power potential that this Long Tube Header and Off-Road H-Pipe combo kit has to offer, AmericanMuscle highly recommends a Custom Tune with a Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

Application. The MBRP Long Tube and Off-Road H-Pipe Kit is a perfect performance upgrade for all 2011-2014 GT Mustangs equipped with MBRP Street Cat-Back Exhaust, MBRP Race Cat-Back Exhaust or OEM Exhaust System.

Technical Notes. This MBRP product may not be legal for use on pollution controlled motor vehicles; intended for off road use only.

Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (2) Long Tube Headers
  • (1) H-Pipe
  • (3) Clamps
  • (4) O2 Extensions
  • Installation Hardware
Installation Info
Tech Specs
Header Specifications
Header Type: Long Tube Finish: Natural
Type Mid Pipe Required: Shorty - Included Fitment: 2011-2014 GT

Mid Pipe Specifications
Style Mid Pipe: Shorty H-Pipe Type Headers Required: Long Tube - Included
Piping Material: T304 Stainless Steel Piping Size: 3"
Catalytic Converter: No - Off-Road Fitment: 2011-2014 GT
Will it fit my Mustang?
  • GT - 11, 12, 13, 14

Most Helpful Reviews


These long tubeheaders greater enganced the breathing capability of my car, greatly enhanced the sound from the exhaust

Helpful (3)

Great combo!

I paired this with my MBRPstreet cat back and man does she scream! It's got a deep almost throaty sound and it is absolutely amazing! Price is a little steep but with what you're getting you can't beat ...

Read More
Helpful (2)

Overall Rating 5 out of 5 stars
Read All 2 Reviews

Customer Photos

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7 Questions / 6 Answers

Ask a Question

will Roush axle backs work with this combo


  • There is stock piping between the axle back and this exhaust, but functionally speaking they certainly will be fine for your Mustang.


Helpful (0)

Does this come with gaskets for install?


  • The MBRP Long Tube Header and Off-Road H-Pipe Kit will include all installation hardware, including the gaskets.

    Rob D

Helpful (0)

What are the differences in quality between this kit or Stainless Works and Kooks? Does anyone who have these installed have any issues with gaskets, leaking, overheating, rusting, etc? Also, what type of welding job is this....Tig or Mig?


  • All three headers are going to have a 304 stainless steel construction. All of them are going to be TIG welded. The only difference between them would simply be the design of the piping. I suggest checking out some reviews on each of the headers to see what other people are saying about them. None of them should have issues with gaskets, exhaust leaks, or rusting. They will discolor in time since they do not have a ceramic coating.


Helpful (0)

Can this LT/H-Pipe Kit bolt to the Roush Axle-Back Exhaust w/ Dual Chamber Tips, part#421410?


  • Axlebacks and midpipes do not touch. You will have stock piping in between that these will be connecting to.


Helpful (0)

Do we need check engine light eliminators like on the 04 models or how does keeping the light off work with the newer ones. I will be getting an '11-'14 in the near future


  • This header and H-pipe kit comes with O2 extensions, so there's no reason to purchase the MIL eliminators. Since this comes with the extensions it should not throw any codes. Also if you do not have a handheld tuner already, we recommend a Bama tuner to realize the full potential that the headers will add.


Helpful (0)

Already have MBRP Cat back race series exhaust on my 2014 mustang GT Convertible. Will this header and off road H pipe kit work with the convertible?


  • So there is a specific H-pipe needed to fit that long tube header and catback combo. I will link them below: (Item 390866) (item 390865) They are both the same catted H-pipe, the only difference being one is aluminium and the other is stainless steel.


Helpful (0)

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Customer Reviews (2) Write a Review

Overall Rating 5.0

out of 5 stars

Installation Time:Full Day

  • Loudness / Volume 5 5
  • Exhaust Note 5 5
  • Fit & Finish 4.5 4.5
  • Bang For Your Buck 5 5

  • 5/5

    Installation Time: Afternoon

    October 12, 2016


    These long tubeheaders greater enganced the breathing capability of my car, greatly enhanced the sound from the exhaust


    Year: 2011 Submodel: V6

    Helpful (3)

  • 5/5

    Installation Time: Weekend

    October 12, 2016

    Great combo!

    I paired this with my MBRPstreet cat back and man does she scream! It's got a deep almost throaty sound and it is absolutely amazing! Price is a little steep but with what you're getting you can't beat it. I went from stock headers out borla atak and this hands down beats it in every aspect. You will not be disappointed! But the install... this install took me 16 ish hours on jackstands. You'll learn a few new curse words I'm sure trying to squeeze the headers in there but once you have the passenger side in it goes by fairly quick. But good luck!


    Year: 2011 Submodel: GT

    Helpful (2)

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