FREE 2 or 3-Day Delivery on 10,000+ Items. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$12k Summer Sweeps, 3 Chances to Win! Enter Now >

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

Item 99851
AmericanMuscle no longer carries the Ford Performance 4.10 Gears and Install Kit (86-04 V8). Please check out 2015-2022 Mustang Gear Kits for an updated selection.
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P

    Product Information

    Features, Description, Q&A, Specs & Installation


    • 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.

    CA Residents: WARNING: Cancer and Reproductive Harm -

    Installation & What's in the Box

    Installation Info

    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

    Questions & Answers

    10 More Questions

        Related Mustang Categories