Customer Reviews (27) Write a Review

Overall Rating 4.4

out of 5 stars

Installation Time:Full Day

Installation Cost:$100-$250

• Performance Gain 4.25 4.3
• Fit 4.625 4.6

• 4/5

  Installation Time: Shop Install

  Installation Cost: $100-$250

  March 29, 2018

  Performance Automatic shift kit.

  It came fast and is a great product I can definitely tell a difference in my mustang shifts now. Shifts hard and firm launches car forward with every shift definitely recommend.

  BrandonS

  Year: 2004 Submodel: V6

  Helpful (1) Thanks for your input!

  • Performance Gain 4

    4

  • Fit 4

    4
• 5/5

  Installation Time: Afternoon

  March 11, 2018

  I love it

  Work great really woke up my transmission. Thank AM

  StambaughC

  Year: 2002 Submodel: GT

  Helpful (1) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  July 28, 2017

  Great product

  Loved it enoy it everyday...the best..not a waist of time or money...great product.it does exactly what they say

  Dee

  Year: 2003 Submodel: GT

  Helpful (2) Thanks for your input!
• 1/5

  Installation Time: Full Day

  June 15, 2017

  2004 mustang Gt

  Well let's start by saying when I received this kit it came wit no instructions, so I contacted AM and they say they don't have them and to contact the manufacture, so I did, still no instructions, so after digging on the internet I find similar instructions then come to find none of the springs in the kit I received fit my transmission. And yes I have a stock 4r70w trans that's now disassembled thanks to AM

  JakeW

  Helpful (3) Thanks for your input!

  • Performance Gain 1

    1

  • Fit 2

    2
• 5/5

  Installation Time: Afternoon

  May 28, 2017

  Great product.

  Nothing to say except another quality product from AM. Thanks.

  2002stang

  Year: 2002 Submodel: GT

  Helpful (2) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 1/5

  April 29, 2017

  Ripped gasket

  My shift kit came with a ripped gasket anyway I can get a new one?

  TrentR

  Year: 2004 Submodel: GT

  Helpful (3) Thanks for your input!

  • Performance Gain 1

    1

  • Fit 5

    5
• 5/5

  Installation Time: Afternoon

  March 10, 2017

  Shift kit

  Love it 2002 mustang gt automatic very sluggish changing into 2nd and 3rd car only has 89,000 miles installed the kit and BAM 2nd and 3rd it's sideways thanks AM.

  ShawnM

  Year: 2002 Submodel: GT

  Helpful (2) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  February 08, 2017

  Absolutely worth it

  Once you get it put in, tune the car, it'll go from sluggish, to lighting fast shifts, absolutely love it

  NimaE

  Year: 1998 Submodel: V6

  Helpful (3) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  Installation Time: Full Day

  November 01, 2016

  fast shifting...

  It's not ship to install but it worthy .$575..new motorcraft oil new filter .you will fill the huge difference right way......fast shifting ...you will love it ! ..

  Wkrichard

  Year: 2001 Submodel: GT

  Helpful (4) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5
• 5/5

  October 07, 2016

  Greatest product for your Mustang!

  First of all, AM shipping is outstanding! I ordered it on a Wednesday and got it that Friday! Amazing! I had it put in a few days after I purchased it and I can definitely feel the difference! I paired it with a BandM ratchet shifter and it makes my automatic feel like a whole new car! Nice, tire chirping, firm shifts! Definitely would recommend if you want to have fun in your automatic GT! Thanks AM!

  Papito

  Year: 2001 Submodel: GT

  Helpful (3) Thanks for your input!
• 4/5

  August 12, 2016

  Improved Shifting

  Instruction illustrations could use some improvement. But all in all the installation went smooth. Shifting is tighter.

  Roger

  Year: 2003 Submodel: GT

  Helpful (3) Thanks for your input!
• 5/5

  Installation Time: Full Day

  August 31, 2015

  Worth it when coupled with other things...

  My transmission was rough shifting and seemed to be sticking solenoids, so i figured time to change them (195K mi). I figured while i was under there would be a perfect time to install this shift kit. It seemed overwhelmingly complicated at first but I (who am not a trans person) was able to work my way through it. This kit coupled with new solenoids, 2 bottles of Lucas stop slip, fresh Castrol Mercon V and Trans filter has brought a fresh breath of life back into my transmission!! It operates so smoothly now, it hard shifts because of the kit but its a smooth hard-shift not one that feels like doom for your trans. I would highly recommend to anyone with a 4R70W transmission this kit and service the filter and solenoids (if high millage) and definitely some Lucas!

  MVFast02V6

  Year: 2002 Submodel: V6 Hampshire, IL

  Helpful (2) Thanks for your input!

  • Performance Gain 4

    4

  • Fit 5

    5

  • Bang for your Buck 5

    5
• 5/5

  Installation Time: Afternoon

  December 22, 2014

  2001 Mustang Gt Convertible

  This is a great product that every mustang owner should consider! Specially if you've upgraded to 410 gears as i did. All i could say is "wow", my car feels much more powerfull when it shifts and even chirps the tires. Only wish Performance Automatics would've included some instructions, diagram or something to save some time. Other than that it's a great product! Thank you American Muscle!

  Junylajara

  Year: 2001 Submodel: GT Sabana Grande, Puerto Rico

  Helpful (3) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5

  • Bang for your Buck 5

    5
• 5/5

  Installation Time: Afternoon

  October 22, 2014

  great shift kit!!

  For the price this is a great deal. Easy to install and made a world of difference in my tranny. Thanks American Muscle!!

  tat2

  Year: 2001 Submodel: GT Illinois, USA

  Helpful (2) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5

  • Bang for your Buck 5

    5
• 4/5

  Installation Time: Shop Install

  Installation Cost: $100-$250

  September 19, 2014

  Big improvement over stock

  Had this installed by a transmission shop that was highly recommended by more than one person I asked who they would trust to do the job. The shop has done "dozens" of shift improvment kits. I paid the extra for synthetic fluid, and the car already had a transmission cooler installed after the radiator cooler. I'm very slightly disappointed. After reading the reviews here I expected some neck-snapping tire-chirping hard-hitting shifts, especially the 1-2. Yes my 04 is a V6 and I am taking into account it doesn't have the power to blast the tires loose when I feel like it. Although the kit did significantly improve the shifting over the mush-box that was stock from Ford, I didn't get those head-banging shifts. They are firm and tight, and happen a LOT faster than stock. The car is much more pleasant to drive now, and that two second "which gear do I really want to be in" that was so embarrassing is gone. I'm (by a great majority) pleased with the results, and definitely happy I bought it. That tiny disappointment is there though. Just keep in mind, you're results may vary from what other reviews say, as mine did.

  JohnnyBelleair

  Year: 2004 Submodel: V6 Ocala, FL

  Helpful (3) Thanks for your input!

  • Performance Gain 3

    3

  • Fit 5

    5

  • Bang for your Buck 4

    4
• 5/5

  Installation Time: Shop Install

  Installation Cost: $250-$500

  August 25, 2014

  MUST HAVE FOR ALL AUTO'S

  WOW!! this is by far the best purchase for an automatic known to man... shop took only 3 hours to install it and it's worth every penny... MUST HAVE for automatics

  fransauce

  Year: 2004 Submodel: GT jax fl

  Helpful (2) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5

  • Bang for your Buck 5

    5
• 4/5

  Installation Time: Full Day

  July 20, 2014

  The only shift kit I could find for this transmission

  The instructions are very limited if you have not done this mod before. The instructions assume that you already have the valve body out of the transmission and laying on the bench. They also assume that you have prior knowledge of the internal components of an automatic transmission. Like where is the 1-2 accumulator piston ? This is a great kit but instructions are not for the beginner. Also, for the price a few drill bits should be provided.

  fakesrt

  Year: 2001 Submodel: GT Columbus, OH, USA

  Helpful (2) Thanks for your input!

  • Performance Gain 4

    4

  • Fit 4

    4

  • Bang for your Buck 4

    4
• 4/5

  Installation Time: Full Day

  July 10, 2014

  Shift Kit 2003 V6

  It took all day but overall not bad. The trans fluid mess was the worse thing. Dropped 11 qts during the change. Most likely I had some of the cooler drain back. The shift change was not major, but I put in a Bama tune a few days later and that made a huge difference. so recommend doing both at the same time.

  xfree143

  Year: 2003 Submodel: V6 Houston, TX, USA

  Helpful (3) Thanks for your input!

  • Performance Gain 3

    3

  • Fit 4

    4

  • Bang for your Buck 4

    4
• 2/5

  Installation Time: Afternoon

  March 30, 2014

  no difference

  I installed on my 2003 mach 1 and really have not felt a difference. Instructions were not good so took a little longer than it should have. I wasn't the original owner of this car or know who ones it before so don't know if there was a kit installed before I installed it.

  cmholder

  Year: 2003 Submodel: Mach 1 nc

  Helpful (3) Thanks for your input!

  • Performance Gain 2

    2

  • Fit 3

    3

  • Bang for your Buck 2

    2
• 5/5

  Installation Time: Full Day

  October 20, 2013

  Great features

  Transmission never felt better. I installed this product after 3:73 gears. The shift kit complimented it beautifully. Great shift points, even more awesome tire chirps between gears,and it saves wear and tear on the Trans. No brainer its an awesome product, I'm very happy

  Clubb07

  Year: 2002 Submodel: GT

  Helpful (3) Thanks for your input!

  • Performance Gain 5

    5

  • Fit 5

    5

  • Bang for your Buck 5

    5