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Ford Performance 4.10 Gears and Install Kit (86-04 V8)

AmericanMuscle no longer carries the Ford Performance 4.10 Gears and Install Kit (86-04 V8). Please check out Ford Mustang Gear Kits for an updated selection.
Market Price $319.99 You Save 20% ($64.00)

$255.99

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  • Item 99851
  • MPN#1300

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AmericanMuscle no longer carries the Ford Performance 4.10 Gears and Install Kit (86-04 V8). Please check out Ford Mustang Gear Kits for an updated selection.

Features & Details

  • Money Saving Combo Kit
  • Ford Racing 4.10 Gears - 8.8"
  • Ford Racing 8.8" Rear End Installation and Bearing Kit
  • 1 bottle of Ford Racing Friction Modifier
  • 2 quarts of Royal Purple Max Gear 75w90 Gear Oil
  • Fits 1986-2004 V8 with 8.8" solid rear axle
Improve ET's and low end torque. Are you looking to get more low end grunt off the line and lower ET's at the same time? Then look no further than installing a set of steeper gears in your Pony. This Ford Racing Ring and Pinion Gears are perfect for street, road, or race use.

Complete Kit. This Ford Racing Gear and Installation Kit comes complete with all the components needed to swap out your ring and pinion gear. It includes Ring gear, Pinion gear, 1 bottle of Friction Modifier, 2 bottles of 75w90 Gear Oil, gaskets, seals, shims, bearings and all the required hardware.

Legendary Ford Racing Quality. When you're adding performance parts to your Pony, you can't go wrong by installing parts from the folks that know it best. Ford Racing's legendary quality ensures years of hassle-free use.

Recommended Upgrade. Changing the rear axle gear ratio will throw off the calibration of your Mustangs speedometer, but a Speedometer Gear, a Ford Racing Speedometer Recalibration Tool or a Bama SF3/X3 Power Flash Tuner is a quick and easy way to fix this issue.

Application. This Ford Racing 4.10 Rear Gear and Installation Kit is designed for use with 8.8in solid rear axle equipped Mustangs, including the GT, Bullitt, Mach 1 and 1994-1998 SVT Cobra. It will not fit the 1999-2004 IRS equipped Cobra Mustangs.

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.

Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

What's in the Box
  • (1) Ring gear
  • (1) Pinion gear
  • (1) 3.8 fluid oz bottle of Friction Modifier
  • (2) one quart bottle of Royal Purple Max Gear 75w90 Gear Oil
  • Cover Gasket
  • Pinion Shims
  • Carrier Shims
  • Crush Sleeve
  • Pinion Seal
  • Pinion Nut
  • Ring Gear Bolts
  • Head Bearing
  • Tail Bearing
  • Carrier Bearings
  • Axle Seals
  • Axle Bearings
Installation Info
Will it fit my Mustang?
  • Bullitt - 01
  • Foxbody - 86, 87, 88, 89, 90, 91, 92, 93
  • Mach 1 - 03, 04
  • Cobra - 94, 95, 96, 97, 98
  • GT - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04

Most Helpful Reviews

5/5
Ford racing 4.10 Gears

First of all I got to say that i'm very impressed with the performance difference that I felt over the stock gears. Rolling in first and stomp the gas and leave rubber, getting sideways through second ...

Read More
Helpful (4)

5/5
Noticeable Gain Off The Line

These gears have a noticeable gain over the stock 3.55's. You'll pull harder off the line and hit the redline faster. My low-tech 0-60 measurements (stopwatch) were about 1/2 second faster with the 4.10 ...

Read More
Helpful (2)

Overall Rating 5 out of 5 stars
Read All 22 Reviews

Customer Photos (6) Submit Your Photo

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1 Questions / 3 Answers

Ask a Question

friction modifier? friction modifier.so with this kit do you add all of it, even though the royal purple has it in it already? or just some of it? thanks

GTsayo

  • Yes - you would want to add both bottles of Royal Purple as well as the full bottle of friction modifier. Hope this helps!

    LisaS

    Good Answer (3) (0)

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Customer Reviews (22) Write a Review

Overall Rating 5.0

out of 5 stars

Installation Time:Weekend

Installation Cost:$250-$500

  • Performance Gain 4.809524 4.8
  • Fit 4.904762 4.9



  • 5/5

    Installation Time: Full Day

    March 22, 2013

    Ford racing 4.10 Gears

    First of all I got to say that i'm very impressed with the performance difference that I felt over the stock gears. Rolling in first and stomp the gas and leave rubber, getting sideways through second gear and chirping third! Makes a big difference. Should be the first mod anyone does! There also not bad on the highway. In town my gas mileage has actually gone up 1 to 2 miles per gallon. Well if I can keep of the gas pedal!! Well anyways if your looking at this take my word and get these 4.10 gears you won't be disappointed.

    GTsayo

    Oregon, USA

    Helpful (4) (0)

  • 5/5

    Installation Time: Weekend

    November 02, 2013

    4.10!

    I have a 94 Cobra and the 4.10 gears made it a beast. Quick acceleration for sure. I would recommend this being your first mod.

    robertsl1978

    Sacramento, CA, USA

    Helpful (2) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    March 22, 2013

    Noticeable Gain Off The Line

    These gears have a noticeable gain over the stock 3.55's. You'll pull harder off the line and hit the redline faster. My low-tech 0-60 measurements (stopwatch) were about 1/2 second faster with the 4.10 gears. My 80mph rpms went from ~2400 to ~2800. It runs a little louder on the highway, but that's just fine by me. Driven easy, the mpg change could be minimal, although I've seen 1-2mpg drop (because I drive her hard everywhere I go). I had a local performance shop install the gears, which really took their time to make sure there was no noise after install. You should be able to find a place to install these for ~$300-600. Highly recommended, should go really nicely with a set of cams...which is next for me!

    RMurphy19

    Savannah, GA

    Helpful (2) (0)

  • 5/5

    Installation Time: Afternoon

    March 28, 2013

    Great product for the price

    I originally had the 3.73 gears and decided to upgrade to the 4.10s. Ever since the upgrade I've noticed the car handles a lot better when I get on the gas. It's a great product and I'd recomend to any mustang owner.

    05stangusaf

    Clovis, NM, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    March 22, 2013

    Good to Go!

    Kit comes with everything you need. Very happy move from 3.73 to the 4.10. My procharged Mach1 hits boost sooner now and was exactly what I was looking for. This is my second set of Ford Racing gears now on this car and couldn't be happier. No knocking, winding or any noise at all. Thanks AM

    Rastarichv

    Ontario, Canada

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    August 13, 2013

    acceleration just keeps pulling

    After a lot of other mods, I finally did the rear end. It should have been one of the first things I did. My car easily spins 295 tires in 3rd. As far as installation, I work at a shop and this kit had everything I needed. One of the best kit I have installed. The 4:10s are perfect for street and track. If you drive a lot of freeway daily, I would go with the 3:73s. Very happy with these gears.

    Albzgt

    Helpful (1) (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    April 23, 2013

    good

    look good work grat and now my car go lot faster on the track

    lloydkendrick

    ar

    Helpful (1) (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    April 24, 2013

    4:10 gears

    The gears were a welcome addition to the cams, headers and BAMA tune. Having switched from 3:73 to the 4:10's I Havent notices any gas mileage as I am always in it right now enjoying the added pick up. 3rd gear in town is like having an automatic. No need to keep changing. Highly recomended

    Ranger05

    Anderson, In

    Helpful (0) (1)

  • 5/5

    Installation Time: Afternoon

    February 11, 2013

    Good kit for the money

    For the money you can't beat the kit. Most of the time they don't come with axle bearings and seals. This one does, as well as it all being ford stuff. Fit was solid, and I have only a minor backlash issue however my particular rearend proved to be a bit difficult for setting it up. If you don't have the tools get someone to install it for you, however this kit is a serious money saver.

    AgentSVT

    South Carolina

    Helpful (1) (2)

  • 5/5

    Installation Time: Afternoon

    March 23, 2013

    Ford Racing 4.10 Gears

    This is a must STANGERS you will not be dissappointed,it tuned this car into a beast.Its not scared of anything.It pulls like a freight train.

    166770

    Chilliwack, BC, Canada

    Helpful (0) (2)

  • 5/5

    Installation Time: Afternoon

    November 12, 2013

    Gears

    Ordered the kit when my brother told me I should get gears and this was a pretty cheap upgrade turns out it's the best upgrade I done to my car for the price I paid for, car rips pretty simple

    Fishole

    Warminster, PA, USA

    Helpful (0) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    October 23, 2013

    Best mustang mod

    It took me a while to pick out theses gears, mainly because of listening to people "who were wrong and know nothing" said 4.10 gears will be too much, lol hahaha they are perfect and it is a great first mod a great second or third or anytime mod. And as far as bolt ons, this is by far the best mod i have done and one of the best prices. Trust me if you are debating getting rear gears like i did, there is nothing to debate and i just wish now i did it alot sooner because it feels like i have a whole new faster car!!!!

    v6sleeper

    wilmington,delaware

    Helpful (0) (0)

  • 5/5

    Installation Time: Full Day

    October 19, 2013

    Good stuff

    Everything needed was supplied in the kit. Even had doubles for yoke bolt and crush washer. I did this from start to finish in about 9 hours. Hardest part of the entire install was removing the old bearings. Very happy with the new gears. Car came alive!

    ManWithThePlan

    Helpful (0) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    October 11, 2013

    These Are A Must

    This 4.10 gear set really pepped up my mustang. A local shop installed them for me and did a wonderful job. Out of everything I've done to my car this was what the doctor ordered. As usual AM came through with with there part of the free fast shipping.

    Green03

    Toney

    Helpful (0) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    August 13, 2013

    best modify for the money

    good pull 1st thru 4th 5th just right for the street

    wildman59

    oxford ga

    Helpful (0) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    July 12, 2013

    Gears really woke the car up!

    Ford racing 4.10 gears are just what a stock mustang needs to wake it up! Put these babies in and hold on! So much low end torque I had to put upper and lower control arms in to stop the wheel hop. Highly recommend you put them in your car.

    buffalopeeps1

    williamsville, new york

    Helpful (0) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    May 27, 2013

    Turning on the 4.6

    American Muscle does the JOB again with this biggest bang for your buck upgrade since the Bama Tuner install. My guys at Exhaust Solutions , Jay Adams did an outstanding install for me down here in Ellenton Fl. Thanks again,can't wait now for the next upgrades to begin!!!The gears are silent and the extreme difference in throttle response was tremendous. Super quick to get to the power range where this motor lives to run. It's great.

    Redranger01

    Ellenton, FL, USA

    Helpful (0) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    May 22, 2013

    No brainer

    I drive my 2000 Conv GT (5 speed) 3-4 days per week. Highways, backroads, all of it. This mod is great - power increase with little downside. Even at 72 MPH on the highway, I'm cruising at 2700 RPM. I'd be super disappointed had I gone with 3.73 gears. I still need to get my speedometer recalibrated, so next upgrade is a tuner!

    JWMotoring

    Vienna, VA

    Helpful (0) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    May 07, 2013

    definitely a huge improvement

    switching to the for 10 years on my automatic oh my god hold on to your seats it is like night and day along with your Bama tune it is incredible the torque gain is just amazing you will love it as I do. I can't wait to get it it to the track need to get it to the Dyno

    jeffs13stang

    Illinois, USA

    Helpful (0) (0)

  • 4/5

    Installation Time: Afternoon

    April 19, 2013

    very good

    I have to say this gear set was worth it.I had them put it by my mechanic and there is no whining or nose coming from the gears I like them very much and would recommend this product thanks am

    dburna

    New Bedford, MA, USA

    Helpful (0) (0)

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