Since 1952
America's Oldest Speed Shop ®
Speedway Motors Bill Smith
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Products

Hook up that horsepower with driveline parts from Speedway Motors. Whether you're racing at your local dirt track, at the drag strip or just have a monster under the hood of your hot rod, we have the parts and technical know-how to help you put the power to the ground.

"Differential, Differential Ring and Pinions" Page 1 of 2

  • 9 Inch Ford Ring & Pinion, 3.50 Gear Ratio
    9 Inch Ford Ring & Pinion, 3.50 Gear Ratio
    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, 3.70 Gear Ratio
    9 Inch Ford Ring & Pinion, 3.70 Gear Ratio
    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 Ratio
    1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 3.54 Gear Ratio
    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.

    • 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, 3.89 Gear Ratio
    9 Inch Ford Ring & Pinion, 3.89 Gear Ratio
    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
    9 Inch Ford Ring & Pinion, 6.00 Gear Ratio
    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)

  • 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
    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. 

  • 9 Inch Ford Ring & Pinion, 4.11 Gear Ratio
    9 Inch Ford Ring & Pinion, 4.11 Gear Ratio
    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 9 Inch Third Member Assembly, Mini Spool, 31-Spline
    Ford 9 Inch Third Member Assembly, Mini Spool, 31-Spline
    x
                
    • Profesionally assembled for oval track racing only 
    • Pro Gears ring & pinion
    • Your choice of gear ratio, 3.50:1 to 7.33:1
    • 31-spline premium mini spool
    • New chromoly cross pin
    • Viton high heat pinion seal
    • Solid pinion bearing spacer with shims
    • Includes 3-5/8"stock Ford yoke.

    910-48341 Instructions (PDF)

    Third members are made to order. Please allow 24-48 hours for order to ship.

    Available options include a yoke to accept 3 1/4" Chevy/GM U-joint (add 91048339) or lightening of the ring gear to remove weight (add 91600013; ratios 4.78, 5.25, 5.37, 5.50, 5.57, 6.14, 6.66, 6.83, 7.00, 7.16, and 7.33 are already lightened). The letter "l" behind a ratio also indicates the availability of a lightened ratio.

  • 9 Inch Ford Ring & Pinion, 4.86 Gear Ratio
    9 Inch Ford Ring & Pinion, 4.86 Gear Ratio
    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, 6.50 Gear Ratio
    9 Inch Ford Ring & Pinion, 6.50 Gear Ratio
    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)

  • 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
    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
  • 1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 3.25 Gear Ratio
    1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 3.25 Gear Ratio
    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)

  • Speedway Ultra-Lite Ford 9 Inch Ring Gear, 6.00 Ratio
    Speedway Ultra-Lite Ford 9 Inch Ring Gear, 6.00 Ratio
    x
                
    • Ultra lightweight ring gear and pinion
    • Speedway's in house lightening process can remove up to 2.6 lbs of rotating weight from your drive train
  • Speedway Ultra-Lite Ford 9 Inch Ring Gear, 5.83 Ratio
    Speedway Ultra-Lite Ford 9 Inch Ring Gear, 5.83 Ratio
    x
                
    • Ultra lightweight ring gear and pinion
    • Speedway's in house lightening process can remove up to 2.6 lbs of rotating weight from your drive train
  • Pro Lightened 9 Inch Ford Ring & Pinion, 6.14 Gear Ratio
    Pro Lightened 9 Inch Ford Ring & Pinion, 6.14 Gear Ratio
    x
                We also offer standard gears from 3.50 to 6.50 ratios on our site. See 91919350.

    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.

     

     

  • 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
    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
    x
                

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

  • 9 Inch Ford Ring & Pinion, 4.56 Gear Ratio
    9 Inch Ford Ring & Pinion, 4.56 Gear Ratio
    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
    9 Inch Ford Ring & Pinion, 6.33 Gear Ratio
    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)

  • Pro Lightened 9 Inch Ford Ring & Pinion, 6.66 Gear Ratio
    Pro Lightened 9 Inch Ford Ring & Pinion, 6.66 Gear Ratio
    x
                We also offer standard gears from 3.50 to 6.50 ratios on our site. See 91919350.

    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.

     

     

  • Ford 8 Inch Ring and Pinion Gears
    Ford 8 Inch Ring and Pinion Gears
    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
    9 Inch Ford Ring & Pinion, 5.14 Gear Ratio
    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
    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


     

  • 1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 6.17 Gear Ratio
    1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 6.17 Gear Ratio
    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)

  • 1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 5.86 Gear Ratio
    1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 5.86 Gear Ratio
    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 - 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
    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
    x
                Please view the product's page for more information
            
  • 9 Inch Ford Ring & Pinion, 6.20 Gear Ratio
    9 Inch Ford Ring & Pinion, 6.20 Gear Ratio
    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)

  • Ultra-Lite Ford 9 Inch Ring Gear & Pinion, 6:50 Ratio
    Ultra-Lite Ford 9 Inch Ring Gear & Pinion, 6:50 Ratio
    x
                
    • Ultra lightweight ring gear and pinion for 9" Ford
    • Speedway's in-house lightening process can remove up to 2.6 lbs of rotating weight from your drivetrain
    • Less rotating mass for faster acceleration
  • DMI XR-1 Bulldog Rear End Replacemnt Ring and Pinion, 4.12 Ratio
    Garage Sale
    DMI XR-1 Bulldog Rear End Replacemnt Ring and Pinion, 4.12 Ratio
    x
                

    DMI offers 4. 12 and 4. 86 ring and pinion gear sets for popular quick change rear ends. Gear sets, which are manufactured from premium 9310 steel for maximum durability.

     

    This is garage sale priced because it has been discontinued.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS  

  • 9 Inch Ford Ring & Pinion, 5.83 Gear Ratio
    9 Inch Ford Ring & Pinion, 5.83 Gear Ratio
    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 - Ford 8.8 Inch Ring And Pinion Gears
    Garage Sale
    Garage Sale - Ford 8.8 Inch Ring And Pinion Gears
    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

  • 7 1/2 Inch Ford Ring & Pinion
    $179.99
    7 1/2 Inch Ford Ring & Pinion
    x
                Choose from two different ratios for your Pony car/Mini stock.  Don't forget the cross pin and bearing kit. 

     

  • Garage Sale - Ford 8.8 Inch Ring and Pinion Gears
    Garage Sale
    Garage Sale - Ford 8.8 Inch Ring and Pinion Gears
    x
                

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

     

    These gears are garage sale priced because we do not usually offer this size and ratio.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

  • Speedway Ultra-Lite Ford 9 Inch Ring Gear, 6.33 Ratio
    Speedway Ultra-Lite Ford 9 Inch Ring Gear, 6.33 Ratio
    x
                
    • Ultra lightweight ring gear and pinion
    • Speedway's in house lightening process can remove up to 2.6 lbs of rotating weight from your drive train
  • Winters Ring & Pinion Set, 4.11 Loaded w/Roller Bearing and Posi-Lok Nut
    Winters Ring & Pinion Set, 4.11 Loaded w/Roller Bearing and Posi-Lok Nut
    x
                

    Winters ring & pinion for quick change with threaded ring gears. Comes with ring gear bolts.

    Pro Eliminator Rear End Diagram (GIF)

  • Pro Lightened 9 Inch Ford Ring & Pinion, 7.33 Gear Ratio
    Pro Lightened 9 Inch Ford Ring & Pinion, 7.33 Gear Ratio
    x
                We also offer standard gears from 3.50 to 6.50 ratios on our site. See 91919350.

    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.

     

     

  • Pro Lightened 9 Inch Ford Ring & Pinion, 7.00 Gear Ratio
    Pro Lightened 9 Inch Ford Ring & Pinion, 7.00 Gear Ratio
    x
                We also offer standard gears from 3.50 to 6.50 ratios on our site. See 91919350.

    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.

     

     

  • 1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 3.78 Gear Ratio
    1935-1948 Ford/Mercury High Speed Ring and Pinion Gear Set, 3.78 Gear Ratio
    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)

  • 9 Inch Ford Ring & Pinion, 5.43 Gear Ratio
    9 Inch Ford Ring & Pinion, 5.43 Gear Ratio
    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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