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SR Performance Underdrive Pulleys - Polished (96-Mid 01 GT)

19 Reviews
Our Price

$84.99

  • Item #41129
  • MPN #41129
  • Market Price $159.99
  • You Save 47% ($75.00)
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Product Videos Customer Photos
Features
  • Free up 10-15 horsepower
  • Complete 3 piece kit
  • Durable, lightweight aluminum
  • Brilliant polished finish
  • Premium quality construction
  • Fits 1996-Mid 2001 GT Mustangs
Description
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 10-15 horsepower, without sacrificing cooling and charging functionality of your Pony.

Premium Quality Construction. CNC-machined from lightweight aircraft grade quality aluminum alloy for strength and durability, these SR Performance pulleys feature a bright polished finish that will give your engine bay an eye-catching high performance appearance.

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

Application. This SR Performance 3-Piece Polished Aluminum Underdrive Pulley Kit is designed for use on 1996 to 2001 GT Mustangs equipped with the SOHC 4.6L V8 engine and the a long water pump (bowed out face). Reuses stock factory belt.
Technical Note. Midway through the production run for the 2001 model year Ford changed the design of the water pump on the 4.6L engine. The older style pump produced from 1996 to mid 2001 had a longer shaft. In January of 2001 the design of the pump was changed to a shorter shaft. This necessitated a change in the design of the pump pulley.

Click here to see pictures of the different pulley styles.

Mustang Fitment: 1996 1997 1998 1999 2000 2001 Details

What's in the Box
  • (1) Crank Pully
  • (1) Water Pump Pully
  • (1) Alternator Pully
  • (4) Bolts
  • (3) Washers
  • (2) Spacers
  • (1) Instruction Sheet
    Hardware included:
  • None Required
Installation Info
Tech Specs
Underdrive Pulley Specifications
Year/Model: 96 to Mid 01 GT Manufacturer: SR Performance
Material: Aluminum Finish: Polished
Crank Pulley: Piggyback SFI Certified: No
Fitment
  • GT - 96, 97, 98, 99, 00, 01

Most Helpful Reviews View All

Overall Rating 4.3/5 Write a Review
2/5
not so great....

Had bad luck from the get go. As bolt did not fit my crank. after finally finding a work bolt, it lasted about 5 months before my crank pulley had cracked! glad i caught it soon! they do look nice, and

Read More
Helpful (9) (3)

5/5
Underdrive pulleys

What i liked about this product is the chrome finish thats it has it. They looks great under the hood.The thing i didn't like about the product was that i had to re-use of my old crankshaft pulley to balance

Read More
Helpful (6) (2)

Videos

Hey I’m Justin with AmericanMuscle.com, and I’m going to be breaking down the SR Performance underdrive pulleys, fitting the 4.6L V8 motor found in all 96-04 Mustangs. Engine accessories like the AC compressor, View Full Transcript

Customer Photos (11) View All

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Q & A (4 Questions, 5 Answers) Ask a Question

what belt size do u use

cobraracing Year: 1998 Model: GT

Question Resolved
Good Question (0) (0)
Show 3 more answers

SR Performance Underdrive Pulleys (96-Mid 01 GT) Does it also give you any torque or just hp?

Evan Year: 1997 Model: GT

Question Resolved
Good Question (0) (0)
  • Since torque is the ability to maintain speed against resistance, you will gain torque at your wheels since there is less resistance on the crank pullley.

    Helpful (1) (0)

    Chasing300 Year: 2001 Model: GT

Does this work on a v6?

CRUZ93 Year: 2000 Model: V6

Be the First to Answer This Question
Good Question (0) (0)

Reviews (19) Write a Review

  • 5 Stars .47 47%
  • 4 Stars .37 37%
  • 3 Stars .11 11%
  • 2 Stars .05 5%
  • 1 Stars 0 0%
4.3

out of 5 stars

17 Customers Recommend this Product

Installation Time:Afternoon

Installation Cost:0-$100

  • Performance Gain: 4.133333 4.1/5
  • Fit: 4.533333 4.5/5
  • Bang For Your Buck: 4.466667 4.5/5
Filter By Sort By
  • 2/5

    not so great....

    April 19, 2011

    Had bad luck from the get go. As bolt did not fit my crank. after finally finding a work bolt, it lasted about 5 months before my crank pulley had cracked! glad i caught it soon! they do look nice, and it seemed to improve throttle response a slight bit, and mid range power seemed a hair better, but not worth the risk. I've read countless horror stories from this set of UD pulley's. GO with Steeda. They seem to have their stuff down!

    JoeyR

    Year: 2000 Model: GT Driving Style: Daily Driver

    Helpful (9) (3)

  • 5/5

    Underdrive pulleys

    March 28, 2011

    What i liked about this product is the chrome finish thats it has it. They looks great under the hood.The thing i didn't like about the product was that i had to re-use of my old crankshaft pulley to balance it. But for the price it cost i don't mind it because it works great. My car feels like it got a boost in power and thats what i wanted. I would recommend it because is a good product, very affordable an it works great. Than

    Estevan Acosta

    Year: 1998 Model: GT Driving Style: Daily Driver

    Helpful (6) (2)

  • 5/5

    Underdrive pulleys

    February 26, 2011

    Had these installed when I had my alternator replaced. Could tell the difference they made with throttle response off the line. Nice, inexpensive mod.

    Jamis H

    Year: 2000 Model: GT Driving Style: Daily Driver

    Helpful (3) (1)

  • 4/5

    Easier to install than I thought.

    August 18, 2014

    These underdrive pulleys were a little easier to install than I had thought. The instructions could be a little more detailed though. There wasn't enough room in front of the alternator pulley to get my impact wrench in. I ended up removing three nuts that hold the radiator overflow tank on and rotated it clockwise to set it on the power steering fluid reservoir, being careful not to damage/disconnect the hoses. The next issue was trying to remove the crankshaft pulley bolt. The instructions only say to put it in gear for a manual transmission. I had it in 1st gear and it kept trying to turn the wheels. Putting it in 5th gear solved the problem and I was finally able to get the bolt loose. Finally, when I put the new alternator pulley on, the nut would press the pulley against the alternator housing so that it would not turn. The set included a couple bushings but the instructions do not mention them at all. I tried putting one over the alternator shaft but it was too short and did not help. The other one was longer but the inside diameter was just too small to fit over the alternator shaft. Using a hand held rotary tool with a sanding drum I was able to take off enough material to slide it on the alternator shaft. The pulley will then rest on the bushing allowing it to turn once the nut is tightened. The alternator will still put out 14 volts and the cooling system seems to be unaffected by the new water pump pulley. I really don't have a means of measuring performance gain so I rated it as "average."

    ki0ha

    Year: 2002 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Jefferson City, MO

    Helpful (1) (0)

  • 5/5

    Really helped free the engine up

    April 11, 2013

    The SR pulleys really help free up horsepower that the engine had all along! and they look great! Overall very happy with the purchase. Thanks American Muscle!

    97stangGT

    Year: 1997 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 TX

    Helpful (1) (0)

  • 4/5

    Easy HP

    January 30, 2013

    Easy to do, and the car runs great. Make sure you get a puller for the crank. Great time to change your belt if needed.

    Gtpitbull

    Year: 1998 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 4 Grayson, ky

    Helpful (1) (0)

  • 5/5

    UNDERDRIVE

    March 07, 2011

    GREAT BUY. I COULD FEEL THEM WORKING WHEN I STEPP OFF IN THE GAS. ONE THING THOUGH MIGHT WANNA CONSIDER GOING TO THE PARTS STORE AND UPGRADE THE BOLTS THAT COME WITH THE PULLIES TO A STRONGER GRADE. I MEAN I DID BUT YOU DONT HAVE TO.

    MILES

    Year: 1996 Model: GT Driving Style: Street / Strip

    Helpful (2) (1)

  • 5/5

    alot better on gas

    December 09, 2011

    this kit makes your uder hood look better and better on gas n i feel a more power out of it. i would recommen this to ever one...

    mex420

    Year: 1998 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 4 texas

    Helpful (2) (2)

  • 5/5

    Great, just great!!

    January 26, 2012

    Good product, only thing I have to say is make sure you got some additive for your coolant in the summer or else if you got a lot of miles, the engine WILL run extra hot because of the enlarged water pump pulley tugging on the output of the water pump. It can be a nuisance when your engine starts to bog down due to A/C and heat again... Overall though I like the performance!

    Miketheman

    Year: 2001 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 St. Louis, MO

    Helpful (0) (1)

  • 5/5

    amazing

    May 16, 2012

    This product is amazing , this was the second thing I bought from AM, its a pretty good price for something that's gets ur pony reving higher when you want it to , I took mine to a local shop n it didn't charge much like 50-80 bucks, but its looks good under the hood as well with the Chrome finishes, I bought this with a cai n raced a 97 cobra in the freeway, and I keep blowing him out the water, I don't recommend you to race in the freeway but still lol atleast u get the point,...love this product

    danjam2000

    Year: 1998 Model: GT Driving Style: Race 'Stangs I have owned: 1 Detroit, MI, USA

    Helpful (3) (8)

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