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Currie 9 Inch Ford Cut-To-Fit 28 Spline Axle, 29 Inch
Currie 9 Inch Ford Cut-To-Fit 28 Spline Axle, 29 Inch

Currie 9 Inch Ford Cut-To-Fit 28 Spline Axle, 29 Inch

28" Overall Length, 28 Spline Count, 4" Spline Length, Steel, 5 on 4.5" Bolt Pattern

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Currie 9 Inch Ford Cut-To-Fit 28 Spline Axle, 29 Inch
Currie 9 Inch Ford Cut-To-Fit 28 Spline Axle, 29 Inch
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Part # UP91142
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Overall Length:
Spline Count:
Spline Length:
Material Type:
Bolt Pattern:
5 on 4.5"
Sold in Quantity:
Overall Diameter:
MFG. Part #:


This is Garage Sale priced because it has been mocked up and cut.  Measures 29" from back side of flance to end of splines.

This Currie 9+ CTF (Cut To Fit) 9" Ford axle provides you with a 28" long, 28 spline axle shaft with 4" of spline length. Up to 3" of this spline length may be cut off so that you may attain an axle length anywhere between 25" and 28" and still have adequate spline engagement into your 3rd. member. All CTF axles feature high performance induction heat treated forged alloy steel construction, and feature a 2.525" brake space dimension which is stock for 64-72 Mustang, Falcons, Fairlanes, and Maverick rearends. Wheel bolt pattern is drilled the stock 5 on 4 1/2" pattern, and an access hole is drilled.

All CTF axles come with a full installation package which includes a set of five 1/2"-20 Ford style wheel studs, one heavy duty small bearing style retainer plate, one high quality small axle bearing with retaining collar, and one axle seal. Sold as a kit.

Currie Rear Axle Installation Instructions

How to Measure Your Housing Tech Tip (Link)

Notes: 1) Axle specifications are 2.525" brake spacing offset, bolts into standard small bearing housing end type, and features a 2.430" axle register diameter. 2) Axle bearing does not come pressed onto the axle shaft, and wheel studs are not installed.

  • 28 Spline
  • 6.158" Axle flange¬†dia.
  • Compatible with "standard small bearing" housing and brakes with 2.525" brake spacing offset
  • Drilled for 5 on 4-1/2"wheel bolt patterns
  • Includes 1/2"-20 wheel studs
  • Compatible with "Small Bearing" housing and brakes with 2-1/2" offset
  • Includes the axle bearing and retainer you will have to press on
  • Axles sold each, not as a pair

Installation Notes:

When installing new axles in rearends with posi traction differentials, be sure to install the driver's side axle first to keep the splines properly aligned.  Failure to do so may move the two splined gears out of alignment, and it may be difficult to install the driver's side axle properly if the passenger side axle is already installed.

Ifinstallation of passenger side axle is done first it may require two people when installing the driver's side axle, with both parties rotating reach axle until splines are in line and the driver's side axle fully sides into the housing.

When cutting axles to desired lengths Currie recommends: 

  • Normal steel cutting machinery (cold saw, band saw, chop saw, etc.)¬†
  • Using a sleeve around the axle such as a small piece of PVC tubing - this allows:
    • The axle to be spun in place while being cut
    • A perimeter cut around the outer diameter assisting in keeping the cut square
    • Avoiding the build-up of too much heat by doing a straight cut (like a knife though a stick of butter)¬†

To ensure you get the most out of your new 9 Inch components, Currie recommends that you perform a proper break-in process:

  • Use a name brand mineral-based gear oil, preferably 85w140 (Extremely high quality synthetic oils may be used once break-in process has been successfully performed)
  • Place vehicle on jack stands and let the¬†rearend¬†spin while the vehicle idles - run transmission in both forward and reverse periodically throughout the process
  • Continue to run the¬†rearend¬†until the pinion gets hot (place hand on bottom of the differential housing to verify this)
  • Proper break-in allows:
    • The ability to install new axles and hit the track the same day without worry
    • Extended life for¬†rearend¬†components
    • Keeps the quality and life of your gear oil¬†

Note: If you find that your rearend is running somewhat "tight" be sure to add Currie's 9+ Friction Modifier to "loosen up".  If a more aggressive performance is desired, Friction Modifier is not needed.




Some parts are not legal for use in California or other states with similar laws/regulations

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