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71-73 Mustang 9-inch Rear End Builder


Complete, ready to bolt-in Currie® 9-inch rear end for 1971 thru 1973 Mustang and Cougar vehicles


Select from a broad range of options and upgrades to configure the perfect rear-end for your build


Details:

  • Currie Centurion High-Strength 9-Inch Notchback Housing with Flush Drain Plug
  • Suspension Bracketry Installed at Factory Locations
  • Currie Sportsman Nodular Iron Gear Case with Daytona Big Bearing Pinion Support
  • Upgraded 1350 Nodular Iron Pinion Yoke
  • Currie 31-Spline Axles with Tapered Bearings
  • Stock 5 on 4.5 in. Wheel Bolt Pattern with 1/2 in. Studs
  • Choice of Differential Type
  • Choice of Gear Ratio
  • Choice of Brake Package
  • Professionally Setup and Shipped Fully-Assembled

*** SELECT OPTIONS TO BUILD AND PRICE ***

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Spring Plate and U-Bolt Kit for 3-Inch Axle Tubes

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$3,562.00

Currie 9-inch rear-ends for 1971 thru 1973 Mustang and Cougar vehicles are complete, direct bolt-in assemblies offered with your choice of popular differential types, gear ratios, and brake options, making it easy to customize the package to meet almost any need

Currie 9-inch rear-ends are built to match the vehicle's stock axle width, pinion offset, suspension mounting locations, and wheel bolt pattern for a straightforward, hassle-free installation

 

Included Standard Features

Centurion Housing   Currie Centurion Housing - Classic notchback looks in a new, high-strength, American-made housing that features 3-inch diameter axle tubes and CNC machined face flange for a flat, leak-free seal - all joined together with strong, attractive welds
     
  Drain Plug - This standard feature makes routine maintenance so much easier - no more removing the brakes, axles, and the third member for a simple oil change
     
Sportsman Gear Case   Currie Sportsman Case - New nodular iron gear case with Daytona big bearing pinion support and 1350 yoke is the perfect foundation for a performance restomod build - no used or reconditioned parts here!
     
Timken Bearing Kit   Master Bearing Kit - High-quality bearings and performance seals are used throughout to provide a long, trouble-free service life
     
Spring Pads   Spring Pads - Heavy-duty 1/4-inch thick spring pad mounts are installed in the OEM locations for bolt-in compatibility with the stock leaf spring suspension
     
Billet Housing Ends   Billet Housing Ends - Currie billet late model Ford Torino large bearing housing ends are CNC machined for accuracy and feature provisions for internal or external axle oil seals
     
Performance Axles   Alloy Axles - Currie Performance 31-spline 1541 alloy axles with tapered axle bearings feature vehicle correct bolt pattern and wheel studs
     
  Bearing Retainers - Heavy-duty retainers assure positive bearing retention and full seal engagement for a long, trouble-free, leak-free service life. *Aftermarket brake kits typically utilize proprietary bearing retainers
     
Professional Assembly   Assembly - Every rear-end is fully assembled in-house by our skilled professionals and shipped ready to install

 

 

Options To Complete The Build

Ring and Pinion Gears   Gear Ratio – Select from a wide range of ratios. Currie uses only the highest quality Motive Gear Performance® series (Orange box) ring and pinion sets in our 9-inch crate rear-ends
     
Differential Options   Differential Options - Select the differential type that meets your traction needs, including standard open, helical gear or clutch-style limited-slip, automatic or selectable locking differential or steel spool
     
Brake Options   Brake Package - Select from a range of brake options from classic 11-inch drums to 14-inch Baer and Wilwood disk brakes that are capable of meeting any performance requirement
     
Gear Polishing   REM® Isotropic Polishing - Removes surface imperfections created during the gear manufacturing process. Polishing eliminates the need for a break-in period, decreases friction, reduces operating temps, and removes stress risers. Polishing helps gears last longer and run quieter
     
Powder Coat   Powder Coat - Optional powder coat finish adds long-lasting protection against rust and corrosion to keep your rear-end looking its best

 

 

NOTES:

Lubrication Requirements - 9-inch rear-ends use a high-offset hypoid gear design requiring severe duty gear oil with API GL-6 rating. Oil not meeting the GL-6 rating will damage the gears and bearings and void the Currie Warranty.

Brake Lines - Rear-ends equipped with a brake package will include flex lines installed (rubber for Explorer brakes,  braided stainless for Wilwood and Bear brakes). Hard Brake lines are not included

Aftermarket Brakes - Currie crate rear ends conform to the ABCS (Aftermarket Brake Configuration Standard). This allows brake kits that use this standard to be easily changed or upgraded without modifying the housing or axles. ABCS brakes use a 2.5-inch brake space with late-model big-bearing Ford housing ends and a 2.80 center hole in the drum or rotor

Wheel Studs - Currie crate rear-ends use standardized-shank Currie Enterprises wheel studs that allow the following wheel studs to be interchangeable in the axles without drilling: 12mm, 7/16, 1/2, and 1/2 x 3-inch competition

Currie 9-inch rear-ends for 1971 thru 1973 Mustang and Cougar vehicles are complete, direct bolt-in assemblies offered with your choice of popular differential types, gear ratios, and brake options, making it easy to customize the package to meet almost any need

Currie 9-inch rear-ends are built to match the vehicle's stock axle width, pinion offset, suspension mounting locations, and wheel bolt pattern for a straightforward, hassle-free installation

 

Included Standard Features

Centurion Housing   Currie Centurion Housing - Classic notchback looks in a new, high-strength, American-made housing that features 3-inch diameter axle tubes and CNC machined face flange for a flat, leak-free seal - all joined together with strong, attractive welds
     
  Drain Plug - This standard feature makes routine maintenance so much easier - no more removing the brakes, axles, and the third member for a simple oil change
     
Sportsman Gear Case   Currie Sportsman Case - New nodular iron gear case with Daytona big bearing pinion support and 1350 yoke is the perfect foundation for a performance restomod build - no used or reconditioned parts here!
     
Timken Bearing Kit   Master Bearing Kit - High-quality bearings and performance seals are used throughout to provide a long, trouble-free service life
     
Spring Pads   Spring Pads - Heavy-duty 1/4-inch thick spring pad mounts are installed in the OEM locations for bolt-in compatibility with the stock leaf spring suspension
     
Billet Housing Ends   Billet Housing Ends - Currie billet late model Ford Torino large bearing housing ends are CNC machined for accuracy and feature provisions for internal or external axle oil seals
     
Performance Axles   Alloy Axles - Currie Performance 31-spline 1541 alloy axles with tapered axle bearings feature vehicle correct bolt pattern and wheel studs
     
  Bearing Retainers - Heavy-duty retainers assure positive bearing retention and full seal engagement for a long, trouble-free, leak-free service life. *Aftermarket brake kits typically utilize proprietary bearing retainers
     
Professional Assembly   Assembly - Every rear-end is fully assembled in-house by our skilled professionals and shipped ready to install

 

 

Options To Complete The Build

Ring and Pinion Gears   Gear Ratio – Select from a wide range of ratios. Currie uses only the highest quality Motive Gear Performance® series (Orange box) ring and pinion sets in our 9-inch crate rear-ends
     
Differential Options   Differential Options - Select the differential type that meets your traction needs, including standard open, helical gear or clutch-style limited-slip, automatic or selectable locking differential or steel spool
     
Brake Options   Brake Package - Select from a range of brake options from classic 11-inch drums to 14-inch Baer and Wilwood disk brakes that are capable of meeting any performance requirement
     
Gear Polishing   REM® Isotropic Polishing - Removes surface imperfections created during the gear manufacturing process. Polishing eliminates the need for a break-in period, decreases friction, reduces operating temps, and removes stress risers. Polishing helps gears last longer and run quieter
     
Powder Coat   Powder Coat - Optional powder coat finish adds long-lasting protection against rust and corrosion to keep your rear-end looking its best

 

 

NOTES:

Lubrication Requirements - 9-inch rear-ends use a high-offset hypoid gear design requiring severe duty gear oil with API GL-6 rating. Oil not meeting the GL-6 rating will damage the gears and bearings and void the Currie Warranty.

Brake Lines - Rear-ends equipped with a brake package will include flex lines installed (rubber for Explorer brakes,  braided stainless for Wilwood and Bear brakes). Hard Brake lines are not included

Aftermarket Brakes - Currie crate rear ends conform to the ABCS (Aftermarket Brake Configuration Standard). This allows brake kits that use this standard to be easily changed or upgraded without modifying the housing or axles. ABCS brakes use a 2.5-inch brake space with late-model big-bearing Ford housing ends and a 2.80 center hole in the drum or rotor

Wheel Studs - Currie crate rear-ends use standardized-shank Currie Enterprises wheel studs that allow the following wheel studs to be interchangeable in the axles without drilling: 12mm, 7/16, 1/2, and 1/2 x 3-inch competition

Products specifications
Vehicle Fitment 1971 thru 1973 Mustang: All models
Housing Currie Centurion heavy-duty 9-inch housing with 3-inch diameter x .188 wall DOM tube
Center Section Currie Sportsman nodular iron gear case with iron Daytona style big bearing pinion support
Pinion Yoke 1350 nodular iron yoke
Axles Currie Performance 1541, 31-spline axles
Housing Ends Billet Torino style late model large bearing
Axle Bearings Set 20 Tapered roller bearing
Bearing Retainers 1/4" thick heavy duty plates, gold zinc plated
Suspension Brackets Heavy duty 2 1/4” wide leaf spring pads are installed in the stock location
Wheel Bolt Pattern 5 on 4 1/2" with 1/2" studs installed
Brake Space 2.5 inch axle standoff
Width 60.875 inches (between wheel mounting surfaces)
Oil Capacity 3 quarts of 85w-140, non-synthetic (API GL-6 rated only)