📦 Ford 9 Inch Axle Shafts – Custom Rear End Build Solution
These high-performance steel axle shafts are designed for custom-built Ford 9-inch rear ends, offering strength, durability, and multiple wheel bolt pattern options. Whether you’re building a custom-width rear end or replacing worn-out axles, these cut-to-fit axles provide the flexibility and reliability needed for race, off-road, and street applications.
✅ Available in 28 or 31 spline configurations
✅ Choice of long (33″) or short (29.51″) lengths
✅ Pre-installed bearings for easy installation
✅ Triple bolt pattern for maximum wheel fitment
✅ Perfect for custom-built differentials and performance upgrades
⚠ Note: Wheel studs NOT included – Sold separately.
🔹 Key Features & Benefits
✅ 1541H Alloy Steel Construction – Provides superior strength & durability
✅ Pre-Installed Bearings & Retainers – Saves installation time & ensures precision fitment
✅ Custom Rear End Fitment – Perfect for building a rear axle to your exact specifications
✅ Compatible with Ford 9″ Differentials – Works with most third members
✅ Versatile Wheel Compatibility – Drilled for 5 on 4-1/2″, 5 on 4-3/4″, and 5 on 5″ bolt patterns
✅ Cut-to-Fit Axles – Easily trim to the exact length needed for your build
🔹 Technical Specifications
⚙️ Axle Shaft Details
| Feature | Details |
|---|---|
| Axle Type | Single Shaft |
| Material | 1541H Alloy Steel |
| Spline Count Options | 28 or 31 Spline |
| Axle Length Options | Long: 33″ / Short: 29.51″ |
| Axle Bearing Type | PA20 Set Bearing (Pre-Installed) |
| Retainer Type | AR375 Torino Retainer |
| Housing End Style | Big Ford / New Style (Torino) |
⚙️ Fitment & Compatibility
| Feature | Details |
|---|---|
| Wheel Bolt Patterns | 5 on 4-1/2″, 5 on 4-3/4″, 5 on 5″ |
| Axle Flange O.D. | 5.93″ |
| Hub Pilot Diameter | 2.781″ |
| Knurl Diameter | 0.685″ |
| Stud Thread Size | 1/2″-20 or 5/8″-18 (Sold Separately) |
🔹 What’s Included in the Kit?
✔️ (2) Axle Shafts – Choice of 28 or 31 Spline
✔️ (2) Pre-Installed Bearings & Retainers
✔️ Multi-Pattern Wheel Bolt Drilling (5×4.5″, 5×4.75″, 5×5″)
⚠ Note: Wheel studs NOT included – Must be purchased separately.
❓ Frequently Asked Questions (FAQ)
🔹 What length options are available?
- Choose between 33″ (long) and 29.51″ (short) axle shafts.
🔹 What is the benefit of a cut-to-fit axle?
- Allows builders to customize rear-end width without needing a custom-order axle.
🔹 Are the bearings pre-installed?
- Yes! These axles include Big Ford (Torino) bearings pressed on for easy installation.
🔹 What rear-end housings will these axles fit?
- Designed for Ford 9-inch rear-end housings with Big Ford/New Style (Torino) bearing ends.
🔹 What brake kits are compatible?
- These axles work with most Ford 9-inch disc and drum brake kits. Some disc brake kits may require minor modifications for proper fitment.
🔹 Can I install these in a limited-slip or posi differential?
- Yes! When installing into posi traction differentials, install the driver’s side axle first to maintain proper spline alignment.
🔹 What wheel stud size do I need?
- The wheel stud holes are pre-drilled to 0.685″ knurl diameter. You can choose between 1/2″-20 or 5/8″-18 wheel studs (sold separately).
🔥 Call to Action – Order Now!
Upgrade your Ford 9-inch rear end with these high-strength alloy steel axles for race, off-road, and performance street applications. Whether you need 28 or 31 spline axles, these cut-to-fit shafts offer the perfect solution for custom-width rear ends.
🛒 Limited stock available – Order today for fast shipping! 🚀
Installation Tips !
- Long:
- 33″ length with 9-1/4″ of spline
- Short:
- 29.51″ length with 8″ of spline
Installation Notes:
Disc brake kits may require increasing the i/d of the center hole in the rotor to match the o/d register or hub pilot on the axle flange, or reducing the diameter of the register or hub pilot on the axle to fit properly to the i/d of the rotor.
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.
If installation 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, it is recommended that the following procedures are performed:
- 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, it is recommended 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
Details
These steel axle shafts have a natural finish and are sold as a pair. They are perfect for small shops and will allow you to build your own custom width rear end easily. Axle length is measured from the flange to the end of the splines. Be sure to select your choice of length; short or long, and either 28 or 31 spline.
- Circle track / off road application 5/8″ thread wheel studs sold separately
- Street application 1/2″ thread wheel studs sold separately
- 9 Inch Ford
- 28 or 31 spline axle
- Short and long cut to fit axle shafts
- Axle has the new style big bearing ends on it
- Bearing measures 3.150″
- Bearings already pressed in
- 2-1/2″ Offset
- Drilled for 5 on 4-1/2″, 5 on 4-3/4″ and 5 on 5″ wheel bolt patterns using 0.685″ knurl dia.
- PA20 set bearing
- AR375 Torino retainer
- Axle length is from the flange to the end of the splines
- Axles sold as a pair with your choice of spline count and length
- The hub pilot (center of the axle flange) measures 2.781″
- The O.D. of the axle flange measures 5.93″
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