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PaceSetter Black Shorty Headers (05-10 GT)

Market Price $245.99 You Save 10% ($25.13)
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  • Item 51050
  • MPN# 70-1074

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Features & Details

  • Increases Horsepower and Torque
  • Shorty Header Design
  • 16-Gauge Mild Steel
  • Free Flowing Mandrel-Bent Tubing
  • Black Painted Finish
  • Fits 2005-2010 4.6L GT and Bullitt Mustangs
More Horsepower and Torque. Improve the performance of your 4.6-powered Pony by replacing those restrictive cast iron factory exhaust manifolds with a set of PaceSetter Shorty Headers. These shorty headers will greatly improve exhaust flow for more horsepower and torque.

Durable Construction. Manufactured from 1-5/8" mandrel bent 16-gauge mild steel tubing for strength and unrestricted airflow, these PaceSetter Shorty Mustang Exhaust headers feature CNC-machined 3/8" thick header flanges for additional strength and an OEM fit.

Black Painted Finish. These PaceSetter Headers feature a standard black painted finish, which is used to protect the headers during storage and shipment, as well as providing an aggressive appearance to your engine bay. This is not a heat-resistant coating.

Application. These PaceSetter Shorty Headers are designed to fit the 2005 to 2010 Mustangs equipped with the modular 4.6L V8 engine, including the GT and Bullitt models.

Fitment: 2005 2006 2007 2008 2009 2010 Details

What's in the Box
  • (1) Driver side shorty header
  • (1) Passenger side shorty header
  • Gaskets
  • Installation hardware
Installation Info
Tech Specs
Header Specifications
Header Type: Short Tube Finish : Black
Type Mid Pipe Required: Standard Fitment: 2005-2010 GT and Bullitt Mustangs
Will it fit my Mustang?
  • Bullitt - 08, 09
  • GT - 05, 06, 07, 08, 09, 10

Most Helpful Reviews

Great product, tricky install

Like the review title-- this is a great product. Great fit, nice sound, much lighter than stock cast iron headers. This is a tricky install with one person-- highly recommend shop install if you aren't ...

Read More
Helpful (1)

With Patience = AWESOME

It took me about 15 hours to do with jack stands and basic hand tools. Very hard to work in small spaces but do-able. Directions submitted by the customer were great. Easy to follow. Just take it one step ...

Read More
Helpful (1)

Overall Rating 3.7 out of 5 stars
Read All 10 Reviews

Customer Photos

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2 Questions / 4 Answers

Ask a Question

headers to stock exhaust will these bolt on to my stock exhaust ?, as i already have flowmaster axle backs.


  • These shorty headers will directly replace your stock manifolds and bolt up to your stock mid-pipe without any problems. Your axle-back would not affect this install. Hope this helps!


Show 2 more answers Helpful (1)

How much power gain ? I have a 06 mustang gt with pypes cut and clamp x pype, and the pypes pype bomb, how much horsepower will iget with this entire set up. I cant decide bewteen these or the pypes shortys. i like the price of these but want the best sound and power gain


  • These are basically the same as the pypes brand. Just different finish. Long tubes are always better, but expect a slight gain (not much in numbers) with shorties. The sound is definitely better and slightly deeper than stock manifolds.


Helpful (0)

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Customer Reviews (10) Write a Review

Overall Rating 3.7

out of 5 stars

Installation Time:Afternoon

  • Performance Gain 3.3 3.3
  • Fit 3.5 3.5

  • 5/5

    Installation Time: Full Day

    August 27, 2013

    Great product, tricky install

    Like the review title-- this is a great product. Great fit, nice sound, much lighter than stock cast iron headers. This is a tricky install with one person-- highly recommend shop install if you aren't super mechanically inclined. Plan on a full 8+ hours if installing yourself. You will need to remove the motor mounts, so an engine hoist will prove handy. They don't come with heat temp paint- just a simple flat black to keep them from rusting while shipping. They will distort and look funky with a few drives but I personally love the look. They fit great- no issues with loosening bolts like some talked about. Just torque properly, and you're all good. This is a great product- highly recommend!!


    Year: 2007 Submodel: GT San Diego, CA, USA

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    July 07, 2013

    Patience required- not too hard

    I essentially followed the customer submitted write up. Took about 9 hours, and I'm pretty mechanically savvy, having done everything else to may car (TBI, CAI, cams, exhaust, etc) Lots of just tight spaces and hard to reach bolts. One thing I did do was completely remove the engine mounts (with engine supported by jack, using a wood 2x4 to support the engine along the seam where the oil pan bolts to the block) remove the 4 bolts which hold the motor mount to the block, plus unbolting the 15mm main mount support gave plenty of room to reach most everything. Had some minor issues with the supplied hardware. None of the down tube bolts matched the supplied nuts-- as if the manufacturer wanted you to cross thread in order to ensure it doesn't come loose. Ditch the supplied large bolts and get some 3" x 3/8 bolts and nuts at Home Depot. TIP: leave a few of the factory manifold studs in (probably of the top side of the header for easy access) as this will help you locate and guide the gasket and header into place... Then use all the supplied hex head bolts to secure the header to the block. All done-- they sound great-- no noticeable gains after the first few tests, but they are way lighter than the stock cast iron, and bring the engine bay temps way down... So we will see if it was truly worth it after a few hard drives!


    Year: 2007 Submodel: Other San Diego, CA, USA

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    April 19, 2013

    Pace setter shortys

    Easy to install and decent horsepower gains along with the bama programmer very satisfied with these headers


    Year: 2005 Submodel: GT Lawrenceburg, IN, USA

    Helpful (1)

  • 3/5

    Installation Time: Full Day

    December 22, 2012

    Pacesetter Shorties

    These were very hard to install. It took me about 12 hours to do. After all that hard work I was pretty disappointed with what little gains I got with it. No sound or performance difference. The only benefit I got from them was the fact that the engine bay definitely dropped a lot of heat.


    Year: 2006 Submodel: GT

    Helpful (1)

    • Response from AmericanMuscle

      Adding shorty headers in combination with an H or X-pipe will greatly help you to feel the performance gains from these headers. It will offer better air flow as well as sound. If you'd like any help choosing which mid-pipe would work best for your application, just give us a call - we'd be happy to help!

      Lisa , Customer Care

  • 5/5

    Installation Time: Full Day

    September 03, 2012

    With Patience = AWESOME

    It took me about 15 hours to do with jack stands and basic hand tools. Very hard to work in small spaces but do-able. Directions submitted by the customer were great. Easy to follow. Just take it one step at a time! Fitment was very good, same with the hardware. Use Locktite also. Have some small rubbing issues with the steering shaft tho. Most likely a simple fix with a dremel or front end alignment.


    Year: 2010 Submodel: GT Pittsburgh, PA

    Helpful (1)

  • 3/5

    Installation Time: Afternoon

    August 25, 2012


    so i got these for the price i said why not let me try them what can go wrong. one things ill say right away that i should of done also is sand them down somehow and repaint them with high temp paint cause now after the paint burned off it just looks ugly. but one thing for sure compare to having stock headers on you can tell the difference the air flow feels alot better and gas mil. is pretty good out of these. the sound actually went down but i installed SLP catted x-pipes a week later and now my car alittle to loud.! but it still sound good install i had a friend helping and wasnt bad at all one thing for sure is if your going do these i use thread locker cause after 2 days of driving i notice my bolts were becoming loose so i just took some locker and put them on and it all good now. and so far no exhaust leaks and everything else is ok. like i said before for the price really cant go wrong


    Year: 2010 Submodel: GT New York, NY, USA

    Helpful (1)

  • 4/5

    Installation Time: Full Day

    April 22, 2012

    Headers review

    After a lil sanding high temp prim and paint and wrap there awesome for the $. Fightment was great


    Year: 2006 Submodel: GT Tallapossa

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    April 27, 2012

    Big Bang for Little Buck

    I ordered those headers not really knowing what would happen. A lot of people told me this is the way to go I. Order to gain power and sound, and they where right. The sound of my car changed dramatically and the power boost is amazing. I have the Pace Setter headers with pypes x-pipes and Flowmaster axelbacks plus a Nama street tune on 87 octane. My car changed from a mustang to a rocket it's really unbelievable. Don't wast time thinking about getting them, GET THEM!!!!!!


    Year: 2008 Submodel: GT Sarasota, Florida

    Helpful (1)

  • 2/5

    Installation Time: Full Day

    December 10, 2013

    Exhaust leak on weld joint

    Headers are not great, fitment was a pain in the butt! I had to use 2 shorter bolts in 2 places because I could not fit the supplied bolt into place due to pipe clearance. As in the pipe was right above the bolt hold and at no angle was I able to get the bolt in there. The driver side flange bolt on the block side is next to impossible to install. Had to take it to a shop to flush it up and afterwards I could smell and hear an exhaust leak, took it back and they said it was one of the welded joints and there was no use to try and fix it because it was so thin it would just crack open again. The Long Tube Pacesetters were way more solid than these. I bought the shorties to reinstall the stock catted mid pipe setup for emissions inspection. Will prob go back that route and just cut/weld in some high flow cats. sound is meh, gotten better as the headers break in but can't get past the smell of the exhaust leak : / but it passed emissions somehow. but really you get what you pay for and they have served their purpose for now.


    Year: 2007 Submodel: Other Hickory, NC, USA

    Helpful (0)

  • 2/5

    Installation Time: Afternoon

    December 21, 2013

    Talk about junk...

    I bought a set of these awhile back (I'd say around '07-08) and man, did I have my hands full of exhaust from that point on! They wouldn't seal at the heads (two different sets of gaskets used changed nothing), the collectors weren't angled correctly for the rest of the exhaust (had factory at the time except for muffler deletes) and caused leaks there, bound the whole exhaust up to where the delete pipe hangers were forced into the rear bumper support and had to be forced tightly there and at the center connection forward of the axle to get even 1/8" of clearance. The factory H-pipe had a twist to its mounting now and was trying to rub the floor, the over-axle pipes were occasionally rubbing the panhard support and/or hitting the spare tire well, and the extra heat at the driver/passenger floor was causing my legs to sweat during any time other than winter. I wrapped the headers then with exhaust wrap which seemed to curb the heat problem, but ended up with a cracked weld at the collector and decided to scrap them. For performance, longtubes are the way to go and I'm not the only guy I know that has issues with shorties fitting the car, so I vied for the Dyatech Supermaxx set and haven't looked back! Save up for longtubes and get a good seal.


    Year: 2006 Submodel: GT Florida

    Helpful (0)

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