Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Products

Differential Ring and Pinions

Differential Ring and Pinions

Choosing the right Ring & Pinion can be challenging.  Knowing which ratio, spline count, material, and shaft diameter to choose from can trip up even the most experienced mechanic.  Speedway Motors offers a huge selection of Ring & Pinions and the best techincal support around to help make sure you get the right parts for your car.  All our Ring and Pinions offer exceptional strength and service life at a price that can't be beat!

Featured Products
  • GM 10 Bolt 7.5 Inch Ring and Pinion
    From: $149.99
    Product Rating: 4.00 Stars
    GM 10 Bolt 7.5 Inch Ring and Pinion
    (Part #91913)
    x
                

    IMPORTANT NOTE: Ring & Pinion  ratios are designed for use with a "3 series" carrier. If you intend to install these ratios with a "2 series" carrier, you need to use ring gear spacer #910-48305.

    • 7.50" diameter ring gear
    • 1.438" diameter pinion
    • 27 splines
  • 1970-96 GM 10 Bolt 8 1/2 Inch Ring and Pinion
    1970-96 GM 10 Bolt 8 1/2 Inch Ring and Pinion
    (Part #91910)
    x
                

    Many ratios to choose from.

    • 8.50" diameter ring gear
    • 1.625" diameter pinion
    • 10 ring gear bolts
    • 10 cover bolts
    • 30 pinion splines
    • Uses LH thread ring gear bolts - 7/16"-20

    Note: When replacing a stock 2.56 (or numerically lower) ratio, the carrier must also be replaced with a 2.73 or higher ratio's carrier to compensate for the difference in ring gear thickness.

  • 9 Inch Ford Ring & Pinion, 6.50 Gear Ratio
    $159.99
    $169.99
    9 Inch Ford Ring & Pinion, 6.50 Gear Ratio
    (Part #91919650)
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • 9 Inch Ford Ring & Pinion, 6.00 Gear Ratio
    $159.99
    $169.99
    Product Rating: 5.00 Stars
    9 Inch Ford Ring & Pinion, 6.00 Gear Ratio
    (Part #91919600)
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • 9 Inch Ford Ring & Pinion, 6.20 Gear Ratio
    $159.99
    $169.99
    9 Inch Ford Ring & Pinion, 6.20 Gear Ratio
    (Part #91919620)
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • 9 Inch Ford Ring & Pinion, 5.83 Gear Ratio
    $159.99
    $169.99
    9 Inch Ford Ring & Pinion, 5.83 Gear Ratio
    (Part #91919583)
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • 1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 3.54 Gear
    1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 3.54 Gear
    (Part #919107D)
    x
                

    These ring & pinion sets fit 1935-1948 passenger cars or 1935-1941 Ford 1/2 ton pick-ups (no 3/4 ton or larger). All gear sets are direct replacements for stock, non-quickchange Ford banjo rear axles. 6-spline input.

    • Fits 1935-48 Passenger Cars or 1935-41 Ford 1/2 ton pickups
    • Does not fit 3/4 ton or larger
    • Stock (non-quick change)
    • All gear sets are direct replacements
    • Six spline input
    • 3.54 gear ratio

    Installation Instructions  (PDF)

  • 9 Inch Ford Ring & Pinion, 6.33 Gear Ratio
    $159.99
    $169.99
    9 Inch Ford Ring & Pinion, 6.33 Gear Ratio
    (Part #91919633)
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

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"Differential, Differential Ring and Pinions" Page 1 of 3

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  • Garage Sale - 1955-64 GM 8.2 Inch Axle Ring and Pinion Set, 5.13:1 Ratio
    Garage Sale
    Garage Sale - 1955-64 GM 8.2 Inch Axle Ring and Pinion Set, 5.13:1 Ratio
    (Part #919107I.GS2)
    x
                

    This item is garage sale priced because it has been discontinued.  The brown color on the ring and pinion appear to be a paint applied at the factory to check the gear pattern and not surface rust.

     

    **NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS** 

     

    Fits 1955-64 GM 8.2" rear axle.  5.13:1 ratio.

  • GM 10 Bolt Ring and Pinion Instal Kit, 8.5 R&P, 30 Spline
    GM 10 Bolt Ring and Pinion Instal Kit, 8.5 R&P, 30 Spline
    (Part #919831021)
    x
                Everything you need for a complete ring and pinion installation job. 

    Kit Includes:

    • cover gasket
    • crush sleeve
    • marking compound and brush
    • pinion and carrier bearings
    • pinion nut and washer
    • pinion seal
    • thread locking compound
    • sealer

    Note: Pinion-depth shims are not included. 

  • Garage Sale - 9 Inch Ford Ring & Pinion, 4.86 Gear Ratio
    Garage Sale
    Garage Sale - 9 Inch Ford Ring & Pinion, 4.86 Gear Ratio
    (Part #UP45386)
    x
                

    This ring and pinion is garage sale priced because it has been bolted in and returned.   

      NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

    This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle.

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF) 

  • DMI RRC-1306 4.12 Ring and Pinion Loaded, for Bulldog XR-1 Rearend
    DMI RRC-1306 4.12 Ring and Pinion Loaded, for Bulldog XR-1 Rearend
    (Part #94090211)
    x
                Manufactured with the highest quality steel, these rearend parts have  proven reliability. These ring pinion assemblies are replacement for DMI XR-1  Bulldog rearends.
    • Sold individually
    • 4.12 gear ratio
    • DMI replacement component for XR-1 Bulldog rearend
  • Halibrand Ring and Pinion Gears, Loaded w/ Bearings, 3.78 Gear Ratio
    Halibrand Ring and Pinion Gears, Loaded w/ Bearings, 3.78 Gear Ratio
    (Part #91998378)
    x
                

    Highest quality replacement gear set made. Fits all 6-spline Halibrand V8 quick changes.

  • Garage Sale - Ford 8.8 Inch Ring and Pinion Gears, 355 Ratio
    Garage Sale
    Garage Sale - Ford 8.8 Inch Ring and Pinion Gears, 355 Ratio
    (Part #UP16686)
    x
                

    "Pro" brand gears offer excellent quality at a great price!  We offer a terrific selection of ratios for your 8.8" Ford rear axle.

     

    This gear set is garage sale priced because it appears to have been installed and returned, and we don't usually offer an 8.8" ring and pinion.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

  • 9 Inch Ford Ring & Pinion, 4.56 Gear Ratio
    $164.99
    $169.99
    Product Rating: 4.00 Stars
    9 Inch Ford Ring & Pinion, 4.56 Gear Ratio
    (Part #91919457)
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • 9 Inch Ford Ring & Pinion, 6.33 Gear Ratio
    $159.99
    $169.99
    9 Inch Ford Ring & Pinion, 6.33 Gear Ratio
    (Part #91919633)
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • Ford 8 Inch Ring and Pinion Gears
    Ford 8 Inch Ring and Pinion Gears
    (Part #91908)
    x
                "Pro" brand gears offer excellent quality at a great price!  We offer a terrific selection of ratios for your 8" Ford rear axle.
            
  • 9 Inch Ford Ring & Pinion, 5.14 Gear Ratio
    $159.99
    $169.99
    9 Inch Ford Ring & Pinion, 5.14 Gear Ratio
    (Part #91919514)
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • Garage Sale - Loaded Halibrand V8 Ring And Pinion, 3.54:1
    Garage Sale
    Garage Sale - Loaded Halibrand V8 Ring And Pinion, 3.54:1
    (Part #UP18606)
    x
                

    Highest quality replacement gear set made. Fits all 6-spline Halibrand V8 quick changes. Available loaded with bearings.

     

    This ring and pinion is garage sale priced because the bearings have been packed and it has been test fit. 

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS


     

  • 9 Inch Ford Ring & Pinion, 4.86 Gear Ratio
    $159.99
    $169.99
    9 Inch Ford Ring & Pinion, 4.86 Gear Ratio
    (Part #91919486)
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • 9 Inch Ford Ring & Pinion, 3.50 Gear Ratio
    9 Inch Ford Ring & Pinion, 3.50 Gear Ratio
    (Part #91919350)
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • 1935-48 Ford/Mercury High Torque Ring and Pinion Gear Set, 6.17 Gear
    1935-48 Ford/Mercury High Torque Ring and Pinion Gear Set, 6.17 Gear
    (Part #919107J)
    x
                These fit 1935-1948 passenger cars or 1935-1941 Ford 1/2 ton pick-ups (no 3/4 ton or larger). All gear sets are direct replacements for stock, non-quickchange rear axles. 6-spline input. 

    Installation Instructions  (PDF)

  • Garage Sale - 1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 5.86 Gear Ratio
    Garage Sale
    Garage Sale - 1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 5.86 Gear Ratio
    (Part #9109107I.GS)
    x
                

    This item is garage sale priced because it's old stock.  5.86 ratio

     

    **NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS**

     

    These fit 1935-1948 passenger cars or 1935-1941 Ford 1/2 ton pick-ups (no 3/4 ton or larger). All gear sets are direct replacements for stock, non-quickchange rear axles. 6-spline input.

    Installation Instructions  (PDF) 

  • 1935-48 Ford/Mercury High Torque Ring and Pinion Gear Set, 5.86 Gear
    1935-48 Ford/Mercury High Torque Ring and Pinion Gear Set, 5.86 Gear
    (Part #919107I)
    x
                These fit 1935-1948 passenger cars or 1935-1941 Ford 1/2 ton pickups (not 3/4 ton or larger). All gear sets are direct replacements for stock, non-quickchange Ford banjo rear axles. 6-spline input. 

    Installation Instructions  (PDF)

  • Garage Sale - 1941-52 Ford 3/4 Ton Ring And Pinion, 4.87:1 Ratio
    Garage Sale
    Garage Sale - 1941-52 Ford 3/4 Ton Ring And Pinion, 4.87:1 Ratio
    (Part #91900487)
    x
                

    These gears are garage sale priced because we no longer offer them.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

  • Garage Sale - GM 10 Bolt Ring & Pinion Instal Kit, 8.5
    Garage Sale
    Garage Sale - GM 10 Bolt Ring & Pinion Instal Kit, 8.5
    (Part #UP33233)
    x
                Kit Includes:
    • cover gasket
    • marking compound and brush
    • carrier bearings
    • pinion seal
    • thread locking compound
    • sealer
    Note: Pinion-depth shims are not included.  
     
    This is Garage Sale priced because it does not include a crush sleeve or large pinion bearing.
     
    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS  
  • Motive Gear AX Series Ford 9 Inch Lightweight Ring and Pinion Gears
    Motive Gear AX Series Ford 9 Inch Lightweight Ring and Pinion Gears
    (Part #91989)
    x
                

    Perfect for lightweight racing applications, these ring and pinion performance gear sets are designed to fit Ford 9" style rear end housings.  Motive Gear recommends the use of a daytona pinion support and solid pinion spacer in all racing applications.

    • Lightweight ring gear
    • Less rotating mass
    • Faster acceleration
    • Ring diameter: 9"
    • 10-7/16" x 20 right hand threaded bolts
    • Pinion diameter: 1.313" 28 splines
    • 8620 heat treated material 

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    For use in: 

    • NASCAR®
    • NEXTEL CUP®
    • BUSCH GRAND NATIONAL®
    • CRAFTSMAN TRUCK®
    • ARCA®
    • IMCA®
    • UMP®
    • IHRA®
    • NHRA®

    Available in ratios:

    Manufacturer P/N         #of Teeth          Ratio

    F890422AX                 38-9                 4.22

    F890430AX     &n

  • 9 Inch Ford Ring & Pinion, 4.11 Gear Ratio
    9 Inch Ford Ring & Pinion, 4.11 Gear Ratio
    (Part #91919411)
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

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