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SR Performance Underdrive Pulleys - Black Steel (86-93 5.0L)

Market Price $79.99 You Save 13% ($10.00)

$69.99

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  • Item 94331
  • MPN# 2155791

In Stock Ships same business day. Choose options to add to cart

Features & Details

  • Free Up Horsepower
  • Complete 3 Piece Kit
  • Durable Steel Construction
  • Black Finish
  • Premium Quality
  • Fits 1986-1993 5.0L V8 Mustangs
Free Up Horsepower. A set of SR Performance Underdrive Pulleys reduce parasitic drivetrain loss by cutting down the amount of power your accessories take up, these underdrive pulleys will free up 10+ horsepower, without sacrificing cooling and charging functionality of your Pony.

Premium Quality Construction. CNC-machined from aircraft grade quality steel alloy for strength and durability, these SR Performance pulleys feature a gloss black powder coated finish for aggressive good looks and long lasting corrosion resistance.

Easy Installation. These SR Performance Mustang Underdrive Pulleys install quickly and easily in under 2 hours with no modifications required.

Application. This SR Performance 3-Piece Steel Underdrive Pulley Kit is designed for use on 1986 to 1993 Ford Mustangs equipped with the  iconic push rod 5.0L V8 engine, including the LX 5.0, GT and SVT Cobra models.

Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 Details

What's in the Box
  • (1) water pump pulley
  • (1) alternator pulley
  • (1) crank pulley
  • (4) bolts
Installation Info
Tech Specs
UnderDrive Pulley Specifications
Year/Model: 1979-1993 5.0L V8    
Material: Steel Finish: Black
Crank Pulley: Piggyback SFI Certifited: No
Will it fit my Mustang?
  • Foxbody - 86, 87, 88, 89, 90, 91, 92, 93

Fits 5.0L V8's Only

Most Helpful Reviews

5/5
Pullies work GREAT

Work awesome, easy install. Engine rpms seem to climb quicker easy bolt on for cheap horsepower.

Helpful (3)

5/5
Well Worth the Money

Easy Install. Could feel the performance gain instantly. RPMs climb faster. Cheap price. Great deal. Definitely worth the money.

Helpful (3)

Overall Rating 4.8 out of 5 stars
Read All 15 Reviews

Customer Photos

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2 Questions / 2 Answers

Ask a Question

I have a electric water pump and no power steering so can I run just the belt from the alternator pulley to the crank pulley. will these pulleys work for my application?

Jake259

  • Just bought my first mustang. Looking for a up grade from the stock Cam.

    Kody911

    Good Answer (0) (1)

Answer This Question I need this answered (0) (0)

can i use my old belt I don't have ac or smog pump

losgamin

  • You can run a 4 cyclinder a/c belt but instead of running it under the idler pully run the belt over the pully. In other words instead of the idler pully pushing down on the belt run the belt over the pully. You will have to loosen up the idler to get it to run over it and then tighten the idler back. I ran mine this way for years and it worked great.

    gary1027

    Good Answer (0) (0)

Answer This Question I need this answered (0) (0)

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Customer Reviews (15) Write a Review

Overall Rating 4.8

out of 5 stars

Installation Time:Less than 1 Hour

  • Performance Gain 4.615385 4.6
  • Fit 4.615385 4.6



  • 5/5

    Installation Time: Less than 1 Hour

    February 25, 2013

    Well Worth the Money

    Easy Install. Could feel the performance gain instantly. RPMs climb faster. Cheap price. Great deal. Definitely worth the money.

    Brett17

    Year: 1988 Submodel: Other Florida

    Helpful (3) (0)

  • 5/5

    January 01, 2010

    Pullies work GREAT

    Work awesome, easy install. Engine rpms seem to climb quicker easy bolt on for cheap horsepower.

    Dave W

    Helpful (3) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    March 24, 2013

    Sr performance under drive pulleys

    Put this on a 91 lx along with a cold air intake and could tell a big difference immediately. I would defiantly recommend the under drive pulleys.

    Dylan19

    Year: 1991 Submodel: Other Atkins, AR

    Helpful (2) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    April 27, 2016

    Extra horsepower for cheap

    Nice looking pulleys easy to install less than a hour to install notice difference in throttle response and power thanks American muscle

    Mikestang559

    Year: 1992 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    October 21, 2015

    Great 'seat of the pants' upgrade

    Its an upgrade you can feel. I had to replace my harmonic balancer anyways as the rubber was deteriorating. So it made sense to upgrade the pulleys and replace the crank seal. Not a bad price either.

    Luker

    Year: 1988 Submodel: GT NY

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    September 18, 2015

    1988 Mustang Lx 5.0 Father Son project.

    Great fit and a pretty easy install. Cleaned up the engine and gain a few more horsepower. Well worth the money. Bill / Zack

    Bill

    Year: 1988 Submodel: Other Erie, Pa.

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    October 15, 2014

    Great inexensive upgrade

    Bought this for my son's LX, bolted right up and looks great! Alternator pulley was most challenging to get off without any power tools but was definitely worth it.

    Trmn8tr

    Year: 2003 Submodel: Cobra Colorado, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    April 28, 2014

    Works great!

    Installed and works great! I'm glad you had an affordable option.

    Njjack2

    Year: 1990 Submodel: Other Tallahassee, FL, USA

    Helpful (1) (0)

  • 4/5

    Installation Time: Afternoon

    March 22, 2013

    this product is ok

    Really didn't feel any difference, and the actual parts felt fragile.

    biran11

    Year: 1990 Submodel: GT 10233 State Street, Lynwood, CA 90262, USA

    Helpful (1) (1)

  • 5/5

    Installation Time: Less than 1 Hour

    May 28, 2012

    1990 5.0

    Rpm climb faster than normal easy fit and job but really quick to get done took about 30 min for old off and new on

    90mustang

    Year: 1990 Submodel: GT Branson, MO, USA

    Helpful (0) (1)

  • 5/5

    September 07, 2016

    Pulleys

    Easy install quickest and cheapest horse power! Don't know what else to say to use up 50 words but I guess this will have to do.

    Chech

    Year: 1993 Submodel: GT

    Helpful (0) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    January 18, 2013

    1993 mustang

    I installed these user drive pullies in about twenty minutes and when I drove the car I could immediately feel the difference the Rpms shot up with easy and it definitely felt like the car pulled hard I would definitely recommend these pullies

    Rob1721

    Year: 1993 Submodel: Other San Antonio, TX, USA

    Helpful (0) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    September 21, 2012

    show me the money!

    Well worth the money for the performance u get . Can churp the tires in third and don't realy have to try!

    gt274me

    Year: 1991 Submodel: GT Kewaunee, WI, USA

    Helpful (0) (0)

  • 4/5

    Installation Time: Less than 1 Hour

    June 30, 2012

    Easy power

    Improved power snap, you can feel the small power gain. Finish on the parts was ok but definetly not a show part. Unexpectedly improved my idle! Worth the money and time without a doubt.

    89markvii

    Year: 1989 Submodel: Other Redmond, OR

    Helpful (0) (0)

  • 4/5

    Installation Time: Less than 1 Hour

    August 29, 2011

    Does what they say they will, but not the best

    bought these for the old 5.0, and they work perfectly, however there were a few minor annoyances with them that did not effect performance. the paint (or powdercoat?) is too thick and needed to be sanded on the water pump pulley to fit onto the pump, and there are a few areas that the paint is too thin, showing some bare metal (most are hidden after the install) i striped them and redid them flat black so neither cause any issues when i was done. if you are looking for show pieces, these arent for you, but if you want the performance on the cheap, and the looks arent a big deal, these are for you

    Robert

    Year: 1986 Submodel: Other Downingtown, PA

    Helpful (0) (0)

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