1986-93 Mustang BBK Catted H-Pipe for Shorty Headers - 2.5" 5.0 by BBK

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BBK Mustang Catted H-Pipe for Shorty Headers - 2.5"  (86-93) 5.0 1521

Use this BBK high flow H-pipe to compliment the installation of your new shorty headers on your 86-93 5.0L Mustang!

Item #BBK-1521
MPN# 1521

Your Price: $449.99

Market Price:$519.99
You Save 13.46 % ($70.00)

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  • Perfect Match To Your New Short Tube Headers or your stock headers
  • Less Restrictive Than Factory


  • Aluminized Steel Tubing
  • Mandrel Bent
  • 2.5" Diameter
  • Includes High Flow Cats
  • Fits 1986-93 5.0L

What's in the Box

  • (1) H-Pipe
  • All Needed Hardware
  • Installation Instructions

Made in the USA

Product Description

BBK Performance Mid-Pipes
BBK Performance H pipes have been the number one performance brand that Ford Mustang enthusiasts have enjoyed for years. All BBK 86-95 Mustang direct replacement H-pipes feature 2.5” diameter CNC mandrel bent aluminized tubing with two high flow catalytic converters to ensure maximum flow, horsepower, and street-ability. Each BBK H pipe offers performance, quality and value that guarantees years of top performance for your Ford Mustang. New applications are being updated to the ever growing BBK Performance product line if you do not see your application please e mail us for availability.

Factory Like Fitment
OEM- original O2 Sensor locations and factory style die-stamped flanges ensure a perfect fit and BBK In-house dyno-testing has shown solid gains of 12-20 horsepower depending on application.
ALL BBK full length H pipes are designed as direct bolt on to factory headers or any aftermarket shorty headers as well as of course BBK shorty headers.

These are 49 state legal, not legal in California.

Fits 1986-1993 Ford Mustangs

Nitrous & Forced Induction Note
- Installation of these catalytic converters on forced induction and nitrous vehicles may surpass the max efficiency of converters. Damage to internal catalyst is possible with forced induction and nitrous. These are designed for Naturally Aspirated applications only!

BBK Warranty - Click Here

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  • Customer Photos (1)

    Product Reviews (6)

    out of 5 stars
    3.5 stars
    6 reviews
    5 stars    4
    4 stars    0
    3 stars    0
    2 stars    0
    1 star    2

    4 of 6 REVIEWS
    4 of 6 REVIEWS

    1 Stars   Be Warned
    By on 2/25/2015
    Before I start, I just want to say that this has absolutely no reflection on Latemodel Restoration. They have been amazing and will always be my go to place for anything Mustang. Okay, here it is. I like to wait and see how the products work. It has been 2 years since I installed the H-pipe into my 89 GT. I called BBK directly to hear from the horses mouth if this would be safe to run without a smog pump (no emissions in SC). I would've happily went with the o/r version, saving some money, but the tree huger in me wanted the catts. They were boasting how this is the newest best technology and reassured me that I would be fine. Two years come and go, the car starts throwing CELs, bucking at slower RPMs, and just running rough. I had to take it to my shop to get it investigated. The catts were so gummed up they were not salvageable. Since it is a daily driven vehicle, time was not a luxury, and I had to have them do the work. I did not have control of the storage/disposal of the old h-pipe. The shop installed a UPR o/r x-pipe, I should've gone that route to begin with. I was very upfront with BBKs customer service rep disclosing all information and letting them know that I followed their professional advice and this is where it lead me (with a string of e-mails to prove it). It took nearly three months to get the final verdict of no credit granted. I followed exactly what they said, it only lasted 2 years. The thing was, I had proof, I had a confession, but no "murder weapon." For all those that do not have a smog pump, I wish you good luck if you bought this. I will be removing all BBK equipment from my 89 GT. I can not rely on BBK to do the right thing.

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    1 Stars   Lasted 23,450 miles
    By on 6/2/2016
    I purchased the bbk cats appx. 10 years ago but only drive my car on weekends and totaled up my mileage since then and i've only put 23,450 miles on the cats. Tried going thru emissions and failed. Not to boot the hangers that hook to the transmission tailshaft were miss bent and had to modify the hangers so the cats didn't drag on the ground. Not very pleased w/ bbk cats and quality.

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    5 Stars   easy install
    By on 3/18/2014
    After puting it in, I told my wife that it was easy for me to do. However, one of the 0-2 bungs had an incomplete weld. My corner garage rewelded it before I installed the part, and now it works fine.

    Yes, I would recommend this item to a friend!

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    5 Stars   Excellent Fitment
    By on 3/8/2014
    Added the BBK Catted H-Pipe to BBK Shorty Headers and Flowmasters. Great fit, no gas smell with the high flows cats after the smog removal.

    Yes, I would recommend this item to a friend!

    Was this review helpful to you?

    5 Stars   Perfect Fit
    By on 3/5/2014
    Installation went vey well. No issues. Nice quality product. I highly recommend the product

    Yes, I would recommend this item to a friend!

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    5 Stars   Installed on '91 Mustang 5.0l LX
    By on 1/20/2015
    Installation was a breeze with the car up on a lift here at work. Lined up with the stock exhaust correctly with just a slight modification to the smog pump air tube. More of a throaty exhaust note than the original cats and allowed me to reduce my hydrocarbon emissions to pass the dyno test.

    Yes, I would recommend this item to a friend!

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    Vehicle Applications

    Ford Mustang - 1986 (86) - 1987 (87) - 1988 (88) - 1989 (89) - 1990 (90) - 1991 (91) - 1992 (92) - 1993 (93)

    About This Brand

    BBK - Today's Performance
    Since 1988 - BBK has dedicated itself to designing and building cutting-edge high-performance parts and accessories for today's EFI-equipped Mustangs and Ford Lightnings while maintaining the OEM quality levels.

    From their world-famous line of "Power-Plus-Series" performance throttle bodies to their hundreds of "CNC-Series" performance exhaust offerings - the BBK brand is known for delivering unmatched value and quality. Shop BBK for your Mustang headers, exhaust, cold air intakes, and other performance parts!

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