MagnaFlow Dual Exhaust With X-Pipe Kit 2-1/2" Stainless Steel V8 1965-1966

MagnaFlow: 15815
MSRP: $872.17
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MagnaFlow Dual Exhaust With X-Pipe Kit 2-1/2" Stainless Steel V8 1965-1966
MagnaFlow Dual Exhaust With X-Pipe Kit 2-1/2" Stainless Steel V8 1965-1966 Play MagnaFlow Dual Exhaust With X-Pipe Kit 2-1/2" Stainless Steel V8 1965-1966 Video 1

Product Description

MagnaFlow 2-1/2" Stainless Steel Dual Exhaust Kit with X-Pipe for 1965-1966 Mustangs with a V8 Engine.

Are you looking to change out your restrictive original exhaust on your 1965-1966 Mustang with a V8 Engine? If so you might be interested in this 15815 2-1/2" Stainless Steel Dual Exhaust Kit with an X-Pipe from MagnaFlow. This MagnaFlow Dual Exhaust Kit is designed to be a direct replacement for all 1965-1966 Mustangs with a V8 Engine. The MagnaFlow Exhaust Kit includes everything necessary for a complete, quick installation.

- Fits 1965-1966 V8 Mustangs
- 2-1/2" Mandrel Bent Tubes
- Street Series Mufflers
- 409 Stainless Steel Construction
- X-Pipe Design
- Includes Mounting Hardware and Brackets

Please Note: If you’re using the Original Style Headers you might be interested in this Pair of MagnaFlow 2-1/2" Headpipes (EX16445) this makes for a direct connection.

*Slight modifications are required when installing on a 1965-1966 Convertible Mustang.

This Complete Dual Exhaust Kit with X-Pipe is constructed out of durable 409 Stainless Steel. This is ideal because Stainless Steel is corrosion-resistant. The less restrictive 2-1/2" Mandrel Bent Tube flows a lot better and provides a smooth, deep exhaust tone while also giving you performance gains in horsepower and torque. All the correct mounting hardware and brackets are included which makes this kit one of the best in the market.

Magnaflow has manufactured aftermarket exhausts for Mustangs for more than three decades. At CJ Pony Parts, we carry Magnaflow exhausts that deliver high-quality results for low prices. Plus, you can install these exhaust systems quickly and easily so your car spends the minimal amount of time in the garage. All in all, you get some extra horsepower with a satisfying growl that makes your car stand out against the rest.

Purchase a new MagnaFlow 15815 2-1/2" Stainless Steel Dual Exhaust Kit with X-Pipe for your 1965-1966 Mustang with a V8 Engine from CJ Pony Parts today!

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Mustang Applications

This product will fit the following Mustang years:

Product Reviews

Write a review
MagnaFlow Dual Exhaust With X-Pipe Kit 2-1/2" Stainless Steel V8 1965-1966 is rated 5.0 out of 5 by 4.
Rated 5 out of 5 by from What an excellent exhaust!! This exhaust sounds great.. looks great.. Not sure there is any better buy out there.
Date published: 2015-10-10
Rated 5 out of 5 by from Nice exhaust This isn't a bolt on system. You will also need to purchase 2.5" headers as it won't attach to the factory 289. So it goes from about $685 to almost $930. Would be nice to know before you make such an expensive investment. They look great, sound great and overall I'm happy.
Date published: 2016-02-12
Rated 5 out of 5 by from Easy Install & Great Sound Easy install on our '65. It's got a deep sound with the 302. Sounds great without being overly loud so you can't talk.
Date published: 2016-09-13
Rated 5 out of 5 by from Great buy Bought this to go in my 66 mustang. Very nice system
Date published: 2016-09-13
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Product Questions

will this kit fit my 65 Mustang Coupe with a 351 Winsor engine and Shorty headers I am using a 3 speed Manual Transmission

Asked by: Samdog44
It will fit but you would need to make a set of down pipes to connect the headers to the x-pipe.
Answered by: rk cjpp
Date published: 2017-02-24

Hello, I just bought the patriot mid length 1 5/8" headers for my 65. Will this exhaust kit fit?

Asked by: Dustinclark2
A front h pipe would need to be fabricated for this exhaust to work with your headers.
Answered by: rk cjpp
Date published: 2017-01-18

HI Have a 63 fairlane 500 with 302, c4, is this system close enough to fit or do you do an actuall system for the fairlane, what is approx cost to freight to NZ

Asked by: Poobear 57
The vendor has not provided any information regarding cross-fitments of this part to any other model then what is listed. To get a shipping quote and total price, add the item(s) to your shopping cart and then proceed to checkout. In checkout, fill out your address info and scroll down to see shipping options and costs to your area including any import taxes and duties.
Answered by: CJPP Dave
Date published: 2017-01-04

Looking also for the matching headers. 1966 mustang GT Coupe. 289cui Which ones will fit? Thanks in advance  Oliver 

Asked by: OliverH
There are no matching headers for this exhaust system. This system is designed to work with oem style exhaust manifolds or tubular headers, due to various applications possible some modification and welding is required for proper installation.
Answered by: rk cjpp
Date published: 2016-10-19

Hi , will this fit in a 66 289 that comes with single exhaust , saw some forums recommending some brake lines adjustments. thank you

Asked by: msamra
This exhaust kit will fit, you may have to make adjustments to the rear flexible brake hose or try changing it to the dual exhaust hose BHR1.
Answered by: rk cjpp
Date published: 2016-05-24

what will be the recommended headers and down pipe? its a 1965 mustang with 289 rack and pinion up front and 4 link suspension in rear

Asked by: marcos0212
Without knowing what transmission is in the car I couldn't make any suggestions. Shorty or midlength headers will fit either automatics or manuals but some long tubes will only fit one or the other. Shorty or midlength headers will provide the best fitment with rack and pinion's, with a longtube there can be a better chance of interference problems with the steering shaft.
Answered by: rk cjpp
Date published: 2016-03-20

All kits i've seen say that medications are needed on convertibles. Can someone tell me what mods are needed to get this to fit on a 66 convertible? 

Asked by: Xrxfxr
The issues with convertibles is from the center convertible reinforcement plate gets in the way of the exhaust. You will either have to route the exhaust over the plate(a tight fit) or below the plate(low hanging exhaust).
Answered by: Rick CJs
Date published: 2016-02-20

i am planning to put in a 91 mustang 5.0 engine in my 66 mustang would this work on my car?

Asked by: eddiesanchez44
Absolutely, this would sound great with a 5.0L
Answered by: Rick CJs
Date published: 2016-02-20
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Product Video

MagnaFlow Dual Exhaust With X-Pipe Kit 2-1/2" Stainless Steel V8 1965-1966 Video Transcript
By Bill Tumas: Recently, we pulled a tired 289 out of our '67 Mustang convertible, replaced with a killer 306-cubic-inch crate engine from Ford Racing. If you watched that video, you probably remember, we didn't reinstall the exhaust system because it simply wasn't up to par with our new engine. With the power we're making, we need a high-flow exhaust system to go along with it, so today, we're going to install this 2.5-inch stainless steel system from MagnaFlow.

This MagnaFlow exhaust system is made of 100% stainless steel and will fit your '67 through '70 Mustang. Includes a pair of these high-flow mufflers, their Tru-X X-Pipe, these mandrel-bent front tubes that will work with either a stock manifold or a long-tube header, pair of mandrel-bent tailpipes, a pair of polished stainless steel turndowns, and all the necessary hardware for installation.

This won't be one of our typical install videos. The MagnaFlow system is going to require welding to install properly. Since many of you probably don't have a welder at home, and will end up taking it to a local exhaust shop to have it installed, we're going to show you the basics of how it installs, and we'll show you how it sounds when we're finished.

Before we put the car up in the air, you want to remove your back seat. The reason you do this is so you can access your original hangers. It's not a bad idea to get some help when you put the new hangers on, you'll have to line it up to the floor.

Before you begin the actual installation, it's a good idea to lay all the parts out on the ground. That way, you get an idea of where everything's going to fit before you try to install it on your Mustang. You want to start by installing the isolator in the hanger onto the new mufflers. We're going to get a rough idea where those and the tailpipe go and hold them in place.

Put that over the axle. You can see the muffler, and I'm going to use the pole jack to hold it in place when you figure out exactly where you want to put our hanger. Then you want to mark the holes and take everything down. Sometimes you may get lucky and be able to use factory holes. Most times, you'll have to drill your own. I'm going to mark the top hole where we're going to drill.

Once you have it kind of roughly installed, to give you an idea on fit, you want to take the front pipe to get an idea of how they're going to fit. Basically, a universal pipe with a small bend in it, you'll want to see which angle is going to work best to get from the X-pipe to your header or exhaust manifold.

This is what it looks like once you have everything measured and cut to length. Now, you might be tempted to take this side and cut the exact same size for the passenger. You don't want to do that. You want to start again from scratch, just to make sure it's 100% accurate before you cut and weld.

Once you finish welding up your X-pipe and the rest of the mufflers and exhaust system exactly where you want them, we're going to put a small tack on each one of the fittings, just to make sure nothing moves around.

Now that our system's installed and everything's tacked into place, let's fire it up and see how it sounds. It sounds killer with our new engine. Just as we've come to expect from MagnaFlow's exhaust systems, it's the perfect aggressive sound we're looking for. This is not typically a do-it- yourself installation. Unless you're comfortable welding, you should just have your local exhaust shop handle it for you, and they'll have you back on the road in no time.