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SR Performance Ring and Pinion Gear Kit; 3.73 Gear Ratio (11-14 Mustang V6)Find parts that fit my vehicle

Item 397883G116
AmericanMuscle no longer carries the SR Performance Ring and Pinion Gear Kit; 3.73 Gear Ratio (11-14 Mustang V6). Please check out 1979-1993 Foxbody Mustang Drivetrain for an updated selection.
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    Product Information

    Features, Description, Reviews, Q&A, Specs & Installation

    Features

    • Perfect for Street and Track Use
    • 3.73 Gear Ratio
    • 8.8" Ring Gear Diameter
    • Premium Grade 8620 Triple Alloy Steel
    • Corrosion Resistant Black Oxide Finish
    • Professional Installation Recommended
    • Fits 2011-2014 V6 Mustangs

    Description

    Performance Improvement. Installing a set of 3.73 SR Performance Gears will definitely wake up the performance of your V6-powered 2011-2014 Mustang. Ideal for both street and track applications, these SR Performance Gears will place your V6 Pony into its power band much quicker for faster off the line acceleration and more low end grunt.

    3.73 Gear Ratio. 3.73 gears are a great combination of performance and fuel economy that are ideal for a daily-driven Mustangs that see a lot of highway time. If you put a lot of miles on your Pony and don't want to increase your cost at the pump, a 3.73 ratio will still give you the added acceleration you want without dramatically compromising fuel economy.

    Quality Construction. SR Performance manufactures their ring and pinion gears from forged 8620 triple alloy steel for superior strength. Featuring CNC cut and lapped gear teeth, SR Performance completes their gears in a black oxide finish for long lasting corrosion resistance.

    Recommended Upgrade. Changing the rear axle gear ratio will throw off the calibration of your Mustangs speedometer, but a Handheld Tuner is a quick and easy way to fix this issue.

    Attention 2010 and newer Mustang Owners. Starting in 2010 Ford changed the inner rear gear pinion bearing in all 8.8" equipped Mustangs. Because of this you will require a new 8.8" rear gear pinion bearing (Ford part# 9L3Z-4630-A) for proper installation, please see drop down option above.

    Professional Installation Recommended. The installation of Ring and Pinon Gears can be a very intricate process, so mechanical experience is highly recommended. Follow the included instructions for best results.

    Application. This 3.73 SR Performance Ring and Pinion Gear set will fit all 2011-2014 V6 Ford Mustangs equipped with a 8.8" rear end. A master bearing kit is recommended by most installers, especially on high mileage vehicles, see drop down option above.

    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.

    SR Performance

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    Installation & What's in the Box

    Installation Info

    Installation Time

    (approx) a Day

    Difficulty Level:

    Mechanical expertise or professional installation required.

    Installation Guides

      No guide available for this part yet.

    What's in the Box

    • (1) Ring gear
    • (1) Pinion gear

    Warranty

    SR Performance offers our valued customers the following Limited Warranty on all SR Performance product purchased after September 1st, 2026.

    What is Covered

    Subject to the terms, exclusions and limitations herein, and with respect only to products first sold in the United States, SR Performance warrants that its products shall be free of manufacturing defects for three (3) years from the date of initial retail purchase when the SR Performance product is installed and used on purchaser's vehicle according to supplied product installation instructions and/or warnings. This Limited Warranty is made only with respect to the initial purchaser and is not transferrable. SR Performance reveserves the right to require proof of purchase as a condition of this Limited Warranty and to make future revisions to this product or its Limited Warranty without obligation to provide notice of same to purchaser or to conform existing product to future revisions. Any change to this warranty made after purchase may be applied retroactively at the sole discretion of SR Performance.

    What is Not Covered

    Your SR Performance Limited Warranty does not cover damage or claims to any component, vehicle, or person other than the SR Performance product purchased. Your Limited Warranty is expressly limited to replacement of the item itself shall SR Performance determine item was not free of defect. As such, this Limited Warranty does not cover damage or claims to any component, vehicle, or person SR Performance determines to have been damaged by or subjected to:

    • Installation damage, collision damage, alteration, modification, misuse or failure to maintain.
    • Damage in any part attributable to:
      1. vehicle systems or components or
      2. combination with non- SR Performance products.
    • Normal wear and tear/product deterioration.
    • Theft, vandalism or other negligent or intentional damage.

    Remedy Limited to Repair/Replacement:

    The exclusive remedy provided for products covered under this Limited Warranty shall be, upon SR Performance’s inspection and at SR Performance’s option, either repair or replacement of product or parts (new or refurbished). Any parts repaired or replaced will be considered part of the original product and will not extend the term of Limited Warranty. Customers requesting warranty consideration should first contact the independent distributor selling your product to obtain a Returned Goods Authorization number. All removal, shipping, and installation costs are customer's responsibility. If a replacement part is needed before your part can be returned, you must first purchase the replacement part. Then, if SR Performance determines the part warrantable, you will be credited the purchase price of that part.

    This warranty is the only warranty made in connection with the purchase of this product. SR Performance neither assumes nor authorizes any manufacturer, vendor, retailer, other person or entity to assume for it any other obligation or liability in connection with its products or this Limited Warranty.

    Other Limitations - Exclusion of Damages - Your Rights Under State Law:

    • In consideration of the purchase price paid, neither SR Performance nor any independent distributor are responsible for any loss of use or time, rental costs, or for any incidental, consequential, punitive or other damages (whether arising in tort or contract) you may have or incur in connection with your vehicle, or your SR Performance product. Your exclusive remedy hereunder is repair/replacement of the item itself or refund as described above at SR Performance option. All implied warranties of merchantability and fitness for a particular purpose are hereby disclaimed or limited to the extent allowed under your jurisdiction.

    Tech Specs

    4.4

    Customer Reviews (22)

    Questions & Answers (3)

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