Description
Aeroflow Ford 9″ 28-Spline 32″ Cut-To-Fit Axle Kit
Custom-width Ford 9-inch rear end build solution featuring induction heat-treated forged 4140 steel construction.
Product Overview
The Aeroflow Performance AF5079-1001 Ford 9″ cut-to-fit axle kit provides motorsport builders and custom fabricators with a versatile, high-strength solution for constructing custom-width rear ends. Manufactured from induction heat-treated forged 4140 chromoly-grade steel, this axle delivers exceptional torsional resistance with a surface hardness exceeding HRC 52 and a core hardness of HRC 24-28. Supplied at an overall length of 32″ (812.80mm) with 4″ (101.60mm) of continuous spline length, it can be precisely trimmed to suit your exact axle housing width.
Designed for Ford 9-inch diff housings using the new-style big bearing end layout (3.150″ / 80mm OD bearing with 2.5″ / 63.50mm axle offset), this single axle kit is pre-drilled for a 5 x 4.50″ wheel bolt pattern and includes both 7/16″ and 1/2″ press-in wheel studs for complete setup flexibility.
Key Features
- ☑ Heavy-duty forged 4140 steel construction with natural finish
- ☑ Induction heat-treated (Core: HRC 24-28, Surface: > HRC 52)
- ☑ 32″ (812.80mm) overall length with 4″ (101.60mm) spline length for easy shortening
- ☑ 28-spline configuration tailored for entry-level and custom drag/street builds
- ☑ Standard 5 x 4.50″ wheel bolt pattern
- ☑ Fits new-style Ford 9″ big bearing housing ends (3.150″ / 80mm OD)
- ☑ Includes both 7/16″ and 1/2″ wheel stud sets for installation flexibility
Technical Specifications
| Brand | AeroFlow Performance |
|---|---|
| Manufacturer Part Number | AF5079-1001 |
| Differential Fitment | Ford 9″ Rear Axle |
| Spline Count | 28 Spline |
| Spline Length | 4″ (101.60mm) |
| Overall Axle Length | 32″ (812.80mm) Flange to Spline End |
| Material / Finish | Forged 4140 Steel / Natural Finish |
| Heat Treatment Hardness | Core: HRC 24-28 | Surface: > HRC 52 |
| Wheel Bolt Pattern | 5 x 4.50″ (5 on 4-1/2″) |
| Housing End Type | New Style Big Bearing (3.150″ / 80mm OD) |
| Axle Offset | 2.5″ (63.50mm) |
| Hub Pilot Diameter | 3.055″ (77.59mm) |
| Axle Flange OD | 5.93″ (150.62mm) |
| Wheel Stud Knurl Diameter | 0.685″ (17.39mm) / 0.610″ (15.49mm) |
| Quantity | Sold Individually (1 Axle Assembly Kit) |
What’s Included in the Box
- 1 x Aeroflow Cut-to-Fit 28-Spline 32″ Steel Axle
- 5 x 7/16″ Press-In Wheel Studs
- 5 x 1/2″ Press-In Wheel Studs
- 1 x Axle Retaining Plate
- 1 x Axle Bearing Kit (3.150″ OD Big Bearing)
- 1 x Axle Bearing Collar
Engineered to demanding standards by Aeroflow Performance, this cut-to-fit Ford 9-inch axle kit provides reliable strength and precise custom fitment for track and street performance applications. JP Racing is your premier UK distributor for Aeroflow components, offering dedicated customer support and fast dispatch direct to your workshop across the UK.







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