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Ford Performance 3.73 Gears and BAMA X4 Tuner (99-04 V8)

Market Price $699.99 You Save 11% ($80.00)
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  • Item 101657

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    Features & Details

    • Money Saving Combo Kit
    • Bama SF4/X4 Tuner with 3 Custom Tunes
    • Free Tunes for Life
    • Ford Racing 3.73 Gears - 8.8"
    • Motive Gears 8.8" Rear End Installation and Bearing Kit
    • 2 Quarts Royal Purple Max Gear 75w90 Gear Oil
    • 1 Quart of Ford Racing Friction Modifier
    • Includes datalog reviews to ensure your vehicle is fully optimized
    • Fits 1999-2004 V8 Mustangs
    Bama Performance

    The Gears
    The Gears

    Improve ET's and Low End Torque. Installing a set of steeper rear gears is a great way to get more low end grunt off the line and lower your ET's at the same time. Ford Racing Mustang ring and pinion gears feature a super strong forged construction, CNC cut & lapped gear teeth, and a black oxide finish to resist corrosion making them perfect for street, road, or race use. More info about these gears - Here

    The Tuner
    The Tuner

    Power. Performance. Personalized. The SCT Power Flash Tuner features Bama Performance custom tunes that are written specifically for your Mustang. Our tunes are based on a 19 point questionnaire to deliver the most power and performance possible for your Mustang’s modifications. All Bama Performance tunes are tested and proven on our very own in-house Dynojet 224xLC Chassis Dyno. More info about this tuner - Here

    The Combo
    The Combo
    • More horsepower and torque
    • Better throttle response
    • Enhances existing modifications
    • Custom Dyno proven tunes
    • Free Tunes for Life


    Technical Note. Installation costs will vary, but a good rule of thumb is between $250 and $300. Be sure to work with a reliable shop that you trust for installations. You can also save money on your installation labor by having your Trac-Lok rebuilt at the same time as your gears are installed, see drop down option above.

    **NOTE: Programming custom tunes may take 2-3 business days plus applicable shipping time. We recommend ordering other products separately to avoid delay. Some heavily modified cars are not tunable with a mail order tune. Click for details. Membership in the Tunes for Life program is is valid for as long as you own the car that was originally tuned and is non-transferrable.

    Fitment: 1999 2000 2001 2002 2003 2004 Details

    What's in the Box
    • (1) SF4/X4 Power Flash Tuner
    • (1) One USB PC Interface Cable
    • Ford Racing 3.73 Gears
    • Motive Gears 8.8" Rear End Installation and Bearing Kit
    • (2) quarts Royal Purple Max Gear 75w90 Gear Oil
    • 1 quart of Ford Racing Friction Modifier
    • Free Tunes For Life
    Installation Info
    Tech Specs
    Bama Custom Tuning at AmericanMuscle. Power. Performance. Personalized. Proven
    Ordering a Custom Tune?Whether it's a new mod or just an octane change on your existing tunes, our Bama Performance calibrators have got you covered in a few easy steps:
    1. Buy this Tuner & Submit your Mustang's Info
    2. A Bama Performance Calibrator writes custom tunes just for your Mustang & Mods
    3. Load 'em on your Mustang and GO!
    4. As you add new mods, Bama will update your tune files for FREE!
    That's right, Free Tunes for Life!

    More Power. Do you want the ultimate power package for your Mustang? Well look no further, because it has arrived. AmericanMuscle introduces the kit that will launch you into quarter mile times that you have never dreamed of possible; designed to give the best possible performance upgrade for your car, without having to empty your wallet.

    Kit includes: (click on each item for full product description)

    Increased HP and torque. From the factory, the manufacturer programs their vehicles to cater to the needs of the daily driver, not the performance enthusiast. After loading the custom Bama Tune on a vehicle, even a bone stock, unmodified Mustang will realize noticeable gains in HP, Torque, and Fuel Economy.

    Increase your mod's potential. Factory computer settings are calibrated for the original factory components. When making performance modifications, you need to recalibrate the vehicle's computer to realize the full potential that these modifications can achieve.

    Free tunes for life! Every customer that purchases a tuner is enrolled in the "Free tunes for life" program. Any time that you make additional mods to your vehicle, our team of SCT certified Bama Custom Tuners will create new tunes for you.

    Custom Bama Tunes specific to your vehicle. When you order a tuner, you aren't just getting a tuner - you are getting the tuner and 3 dyno-tested custom Bama tunes:

    • Street (87-93 octane) - the street tune is designed as a daily driver program that focuses in on increasing mid-range power. It does give up a few HP at higher RPMs, but that's why there is a Performance file. Automatic vehicles are further enhanced by making adjustments to the transmission's shift points and firmness.
    • Performance (87-93 octane) - The Performance program is designed to add power at 3000 RPMs and higher, focusing more on the top end horsepower and all out performance driving. Timing, fuel and throttle response settings are slightly more aggressive than the street tune. This is a great track tune but also works well for daily drivers that are looking for a little more "get up and go" than the street tune. The automatic transmission settings are the same as in the street tune.
    • Race (91 - 93 octane) - The race tune will ensure the largest increase in vehicle performance. Using the highest grade of fuel available in your area is mandatory. This file is designed for "Race only Use" as the timing, fuel, and throttle response settings are very aggressive. in fact, the adjustments are so aggressive, that we do not recommend it for daily driving as it may cause your vehicle to try to jump out from a stop and easily spin the tires. Finally, with the automatics, we implement entirely new shift points and firmness settings to further enhance the all-out performance of the vehicle.

    Nitrous (91-unleaded race gas) - Our nitrous option can be added to any of our previously mentioned tune options, but only for 91-octane unleaded fuel.

    Easy to load; easy to restore. Not only are the custom tunes easy to load on your vehicle, it is just as easy to restore your factory settings. When you load your custom tune on the vehicle, the tuner automatically stores your vehicle's factory settings. To return the vehicle to its factory settings, just plug the tuner back in, select the option to restore the factory settings, and you're done.

    SCT SF4/X4 Power Flash Tuner Features:

    • The SF4/X4 by SCT is the newest replacement for the popular SF3/X3
    • Reads / Clears DTC Trouble Codes
    • On screen data logging and monitoring
    • Full color LCD display with auto dim feature
    • Built-in WiFi for easy updates
    • PC/Windows compatible
    • Custom tuning applications for 1999-2004 GT, Bullitt, Mach 1 and SVT Cobra Mustangs
    • Click for Instructions on Loading Custom Tunes to your Mustang.

    Approximate RPM for 1999-2004 GT


    Manual
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 3888 5443 6998      
    2 2301 3221 4141 5061 5981 6902
    3 1518 2126 2733 3340 3948 4555
    4 1150 1610 2070 2531 2991 3451
    5 782 1095 1480 1721 2034 2347


    Automatic
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 3267 4573 5880      
    2 1783 2496 3209 3922 4636 5349
    3 1150 1610 2070 2531 2991 3451
    4 805 1127 1449 1771 2093 2416
    Will it fit my Mustang?

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    103 Questions / 92 Answers

    Ask a Question

    I have read the contents of this kit, I have watched the video, but I STILL DON'T KNOW if this kit includes the rear gear pinion bearing kit necessary for 2010 Mustang gear swaps? And this is from a person who reads, writes and interprets complex written language for a living... Also, can not find this "drop-down" menu you are talking about in the video. You warn about it being necessary all the time, yet do not state clearly if this bearing kit contains it or not. Please indicate this CLEARLY for everyone to see, it is really confusing. Apart from that (assuming the kit DOES NOT include the rear, which I seem to deduct from one of the answers for previous questions), why make a bearing kit without the most important and needed bearing? Does ANY kit you sell include this 2010 rear gear pinion bearing (maybe those big kits with bottles for 279$ or any other kits by Ford?) or the only way is to buy the bearing separately?

    MattK

    • We do apologize that the listing is not clear enough. The Motive Rear End Installation and Bearing Kit does not include the Rear Gear Pinion Bearing for 2010-2014 Mustangs. The bearing is not included in the kit because the kit is designed for 1986-2014 Mustangs, and it is not necessary for the majority of the years this kit works on. It is included in the Gear Combo Kits for the 2010-2014 GT and 2011-2014 V6 Mustangs found here: https://www.americanmuscle.com/2010-mustang-gears.html#shop-by7

      VincentV

    Helpful (4)

    Will this correct speedo for a rear gear change

    Keith

    • Yes this Bama tuner would be able to calibrate your vehicle for the gear change that you made to it.

      AMDell

    Helpful (2)

    Whats the difference? What is the difference between this kit and the kit for 35 dollars?

    ncstang06

    • This kit comes complete with everything you need for a full rebuild: bearings, shims, crush sleeve, etc... The $35 kit is a basic kit that is the same as the more expensive version, but there are no bearings included. We highly recommend getting the complete kit and replacing all your bearings and shims at the same time to prevent any costly problems down the road. It's better to replace them all at once, rather than having to tear the car apart again just for a bearing gone bad.

      LisaS

    Show 2 more answers Helpful (2)

    I have a bolt on 99 GT ( intake, intake plenum, intake manifold, pulleys, offroad H, 4.10 gears ) would this be able to extract more whp then my current old revision predator u7146 with canned tunes?

    JamesB

    • The Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes will be able to get you some more horsepower than the preloaded tunes yes!

      Ricky36

    Helpful (1)

    Will Bama be able to tune for an Eaton TVS 1900 Supercharger on my 2002 Mustang GT?

    Nate

    • Unfortunately, Bama does not tune for aftermarket superchargers.

      VincentV

    Helpful (1)

    Do you know if these kits will fit a 99 f150 4x4 with an 8.8 rear gear?

    ScottG

    • The Motive Rear End Installation and Bearing Kit will work with pre 2015 8.8 rear axles.

      Rob D

    Helpful (1)

    People Who Bought This Item Also Bought

    Customer Reviews (100+) Write a Review

    Overall Rating 4.8

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$250-$500

    • Performance Gain 4.568087 4.6
    • Fit 4.891133 4.9
    • Seat Of Your Pants Feel 4.343874 4.3
    • Ease Of Use 4.740158 4.7
    • Bang For Your Buck 4.418972 4.4
    • Preferred Tune: Performance



    • 5/5

      July 17, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      Wake up

      I like the bama tuner it worth the money. The tuner has awakened my car and now runs like it should. Im very happy with the tuner. would rec to anyone

      Chris

      Year: 2004 Submodel: GT

      Helpful (0)

    • 5/5

      July 13, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      The best thing to happen to my car

      I love my Bama X4. It woke my stang up from a sleep that it had from the time that I brought it. Thanks

      ClaudeP

      Year: 2003 Submodel: GT

      Helpful (0)

    • 5/5

      July 08, 2018

      Review from Motive Rear End Installation and Bearing Kit - 8.8 in. (11-14 V6; 86-14 V8, Excluding 13-14 GT500)

      Good kit

      A need for a regear. Has everything you need but the oils

      AlexR

      Year: 2005 Submodel: GT

      Helpful (0)

    • 4/5

      July 05, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      Here it is

      Had to restart a few times to download program once it got past a point it loaded ok

      PhilG

      Year: 2003 Submodel: GT

      Helpful (0)

    • 5/5

      July 03, 2018

      Review from Motive Rear End Installation and Bearing Kit - 8.8 in. (11-14 V6; 86-14 V8, Excluding 13-14 GT500)

      Good!

      Good parts will continue to order from American muscle! Shipping is usually fast but could be faster!

      PaigeC

      Year: 2003 Submodel: GT

      Helpful (1)

    • 1/5

      July 01, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      Bama tuner

      sounded like there was detonation problems when I downloaded my custom tunes. Car lacked power. Made awful noise.

      RonanK

      Year: 2003 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      June 29, 2018

      Review from Ford Performance Ring Gear and Pinion Kit - 3.73 Gears (11-14 V6; 86-14 V8, Excluding 13-14 GT500)

      Ford 3.73 gears

      Theses gears are great . They gave me the extra boost I needed. Cost 450$ to install and it is worth every penny. Great for acceleration and torque.

      RonaldA

      Year: 2006 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Full Day

      June 25, 2018

      Review from Ford Performance Ring Gear and Pinion Kit - 3.73 Gears (11-14 V6; 86-14 V8, Excluding 13-14 GT500)

      373 gear set

      Complete set comes with every thing you need too rebuild your 8.8 rear end. Installed prefect. Good gear set for manual trans. Rpms are still good. Your Speedo will b off a little. And you may want to get another bottle of royal purple to top off the oil. I would recommend!

      JeremyP

      Year: 2009 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $500-$1000

      June 21, 2018

      Review from Ford Performance Ring Gear and Pinion Kit - 3.73 Gears (11-14 V6; 86-14 V8, Excluding 13-14 GT500)

      Getty up and go!

      The 3.73 years are huge step up form the stock 3.31 gears that came with my 09 GT. I got these because the 4.10 gears were backordered and many seem to thing 4.10 is to short of a gear for a 5 speed. I went with the 3.73 on a buddy recommendation that had both. I also got the motive bearing install kit and the GT500 carbon clutch disk pack as well. I had a shop install then and they whined from the get go. I told the shop it was not shimmied properly and they told me to brake it all in because it was all new parts. I knew that this was a un true statement. I put the 500 break in miles on it and took it back to be re shimmied, it took the a additional 2 tries till they got is set perfect. When I changed the fluid after the 500 mile break in I went with a fully synthetic 75-140W and traction additive. The 75-140 is reccomend over 75-90W if the car is going to see a lot of hard launches. At 80mph in 5th gear my tach is reading 2350rmps and I have it calibrated for the gearing with my tuner. 1st great will see almost 40mph when you stomp on it with alot of wheel spin if you dump the clutch. I am Shifting into 5th at120mph now. I will upgrade to 295/40R18 nittos soon from my 255/45R18 Firestones and hope to pick up some more traction thier. This gear is perfect in my opinion, dont hesitate get em now!

      BenjaminA

      Year: 2009 Submodel: GT

      Helpful (1)

    • 5/5

      June 19, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      Great product

      Great product! Defenitely wake up the HP of the Engine

      LuisS

      Helpful (1)

    • 4/5

      June 17, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      04 GT Tuner

      Extremely easy to use, other than initial update/setup. I noticed the enhancement as soon as I started the car. You can feel the change that quickly. I was really impressed with low end performance which I feel the 4.6 lacks tremendously. Thank you A.M./ Bama team.

      WilliamM

      Year: 2004 Submodel: GT

      Helpful (2)

    • 5/5

      June 13, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      Great product

      I got the Baka tuner with 3 preloaded tunes 1 performance 1 racing and one economic gas saver and it was well worth the 400$ I paid it grips harder and drives a lot faster than it ever has

      WesleyU

      Year: 2004 Submodel: GT

      Helpful (1)

    • 5/5

      June 13, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      Bama tuner

      Well worth the money definitely noticed an increase in acceleration and horsepower

      MitchP

      Year: 2003 Submodel: GT

      Helpful (2)

    • 5/5

      June 09, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      Quick easy

      Awesome product love that you can mess with all the little details so you car can perform better

      joser56

      Year: 1999 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Full Day

      June 05, 2018

      Review from Ford Performance Ring Gear and Pinion Kit - 3.73 Gears (11-14 V6; 86-14 V8, Excluding 13-14 GT500)

      Excellent gears

      Easy enough to install. Very quit gears with no whining.

      JoshuaH

      Year: 2004 Submodel: GT

      Helpful (1)

    • 4/5

      June 03, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      Easy to use and load tunes

      It is easy to load the custom tunes, but I do not like the way it bangs in and out of O/D and it holds in the gears to long, shift point need to be lower. I did not get the Personalized ID Plaque.

      KennethE

      Year: 2000 Submodel: GT

      Helpful (1)

    • 5/5

      June 01, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      Mustang Gt 2004

      Great for the car, really feel the car awaken from a deep sleep and start smashing these ricers in the streets.

      DannyO

      Year: 2004 Submodel: GT

      Helpful (1)

    • 5/5

      June 01, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      Increase in Ponies

      I was a little apprehensive but a call to AM calmed me down. I was talked through the install procedure and everything worked as described in the video. All I can say is WOW!! what a difference in the performance. Where were all those Ponies hiding. You got to get one of these tuners!

      JardoO

      Year: 2003 Submodel: GT

      Helpful (3)

    • 5/5

      May 30, 2018

      Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

      Buy it .

      I went back and forth about buying this tuner and honestly i recommend it . The guys over at AM Tuning are so helpful and actually do get back to you . I have nothing but good experinces so far , i had a annoying check engine light on my 2003 Gt because of longtubes and i did my research figured maybe the tune would help with the air/fuel ratio and it DID !

      EdliardoM

      Year: 2003 Submodel: GT

      Helpful (1)

    • 2/5

      May 17, 2018

      I bottle of gear oil

      So far before this install even begins there was only one bottle of royle purple gear oil sent so be prepared to spend an extra 40 plus on that . More to come I’m sure .

      Brad1991331

      Year: 2001 Submodel: GT

      Helpful (1)

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