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Continue shoppingFord I-Beam Front Axles
Our experience has shown that these axle sizes keep the wheels inside the fenders. Keeping the wheels tucked in the fenders allows for a lower ride height with adequate tire clearance. The correct spring part number is provided for each axle.
Please note: If you are ordering an axle for use with original wishbones, measure the perch boss. Both 2″ and 2 1/4″ perch boss axles are in stock. Most 4-bars will use an axle with a 2 1/4″ perch boss.
We also have drilled axles and chrome plating available:
- Add “D” after axle part number for drilling.
- Add “C” after axle part number for chrome plating.
- Add “DC” after axle part number for drilling and chrome plating.
How to Measure Axles
| ’28-34 Short I-Beam This size keeps the wheels under the fenders |
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| Axle Part # | Dim. A | Dim. B | Suggested Spring |
|---|---|---|---|
| 4001 | 46" | 34-1/4" | Order Spring #1005 for this axle |
| ’35-48 Super Bell I-Beam This size keeps the wheels under the fenders |
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| Axle Part # | Dim. A | Dim. B | Suggested Spring |
| 4004 | 47-1/2" | 36-1/2" |
Order Spring #2102 for ’42-48 Ford Order Spring #2037-40L for ’35-40 Ford |
| ’35-48 I-Beam This size keeps the wheels under the fenders |
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| Axle Part # | Dim. A | Dim. B | Suggested Spring |
| 4003 | 47-1/2" | 38-1/2" |
Order Spring #2040 for ’37-40 Ford Order Spring #2101 for ’41-48 Ford |
| ’35-48 I-Beam This size keeps the wheels under the fenders |
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| Axle Part # | Dim. A | Dim. B | Suggested Spring |
| 4005 | 48" | 36-1/4" |
Order Spring #2102 for ’42-48 Ford Order Spring #2037 for ’35-40 Ford |
| ’42-48 Long I-Beam You don’t have to split the wishbones with this axle. |
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| Axle Part # | Dim. A | Dim. B | Suggested Spring |
| 4007 | 50" | 40-5/8" | Order Spring #2100 for this axle |
Note: All ’35-48 dimensions are for use with a P&J wishbone split kit only. Others may vary.
POSIES Do’s, Don’ts, and Tips
When you split the wishbone or run hairpin radius rods, the axle is forced to twist slightly when you hit a bump, drop one wheel in a pothole, or go around a corner. I-beam axles will twist to accommodate this and work well with either split wishbones, hairpins, or 4-bars.
Tube axles are very rigid and will not bend or twist without failing. Do not use tube axles with a split wishbone or hairpin radius rods—you will break something, and it won’t be pretty! Use only a 4-bar setup with tube axles because the four separate bars and somewhat flexible rod ends allow the axle to rotate and compensate for one-wheel bumps without twisting.
This is also why rear ladder bars that mount rigidly to the rear end and run out to the frame rails will twist the rear axle housing or break when run on the street.