Axiom Supply 1.5" Bottom Mount Coil Spacer | Billet | Hard-Anodized | 4WD Only | 2005-2026 Ford F-250/F-350 Super Duty | SKU AXFDL15
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Before ordering, verify your vehicle details, current setup, and SKU with OFAS fitment support so your upgrade matches your build.
Shipping & Delivery
Free shipping is available within the lower 48 U.S. states. Large or heavy items may ship by freight, and delivery timing can vary by warehouse, carrier, and product availability.
Fitment, Shipping & Product Support
The Axiom Supply 1.5" Bottom Mount Coil Spacer (SKU AXFDL15) delivers a precise 1.5" front lift for 2005–2026 Ford F-250 and F-350 Super Duty 4WD trucks. Engineered from precision-machined billet material, these spacers mount directly beneath the factory lower coil spring perch, raising the coil spring base plate off the axle housing — a true vertical lift without affecting spring rate, ride comfort, or load capacity. This bottom-mount design avoids the harshness and unwanted preload common with top-mount spacers, preserving factory coil alignment and compression behavior. Useful for correcting driver-side lean, leveling the front to match a rear lift, or gaining clearance for larger tires or a heavy aftermarket bumper. Grade 10.9 hardware, hard-anodized black finish. Direct bolt-on installation — no cutting required. Covers all three Super Duty generations under one part number: P221 (2005–2016), P558 (2017–2022), and P702 (2023–2026). 4WD only. Front-end alignment is mandatory after installation.
Component Specifications
| Spec | Detail |
|---|---|
| SKU / Part Number | AXFDL15 |
| Brand | Axiom Supply |
| Type | Bottom mount coil spacer kit (not a complete leveling system) |
| Front Lift | 1.5" |
| Rear Lift | None — front leveling only |
| Mount | Bottom mount — under coil spring on lower spring perch |
| Construction | Precision-machined billet |
| Finish | Hard-anodized black |
| Hardware | Grade 10.9 |
| Drivetrain | 4WD only |
| Installation | Direct bolt-on, no cutting required |
| Sold As | Pair (1 left, 1 right, plus 2 mounting bolts) |
What Is and Is NOT Included
| Item | Included |
|---|---|
| (2) 1.5" billet coil spacers (1 left, 1 right) | ✓ |
| (2) mounting bolts | ✓ |
| Shocks or shock extensions | ✗ NOT included — see Fox 2.0 (SKU 985-24-154) or Fox 2.5 HTO (SKU 987-24-000) for compatible upgrades |
| Upper control arms or caster correction hardware | ✗ NOT included — recommended for towing/highway use |
| Full leveling kit components | ✗ NOT included — this is a spacer-only kit |
Compatible Front Shock Upgrades for This Lift
| Series | Confirmed Lift Range | Confirmed Years | SKU |
|---|---|---|---|
| Fox 2.0 Performance Series | 0–1.5" front (confirm exact range) | 2017–2024 | 985-24-154 |
| Fox 2.5 HTO Performance Series | 0–1.5" front | 2017–2026 | 987-24-000 |
Confirm which generation (P221, P558, or P702) your truck is before selecting a matching shock, since some Fox part numbers are platform-specific even though this coil spacer spans all three generations.
Installation Notes
- Alignment mandatory. Full front-end alignment (caster, camber, toe) is required after installation. A coil spacer changes front suspension geometry — do not drive until aligned.
- Bottom mount vs. top mount. This is a bottom-mount spacer (installs under the coil spring), which avoids the harshness and unwanted preload common with top-mount spacers.
- Shock compatibility. A 1.5" front lift extends front shock travel — confirm a compatible Fox shock for your specific Super Duty generation.
- Caster correction. A 1.5" front lift will reduce positive caster. A caster correction kit or adjustable upper control arms is recommended for towing or highway use.
- Tire size. Provides clearance for tires up to approximately 35" on stock wheels, depending on offset and backspacing.
- Torque specs. Torque all suspension hardware to OEM specification for your Super Duty generation.
- Re-torque. Re-torque all hardware after the first 500 miles of driving.
Verified Fitment
| Vehicle | Years | Status |
|---|---|---|
| Ford F-250 Super Duty 4WD | 2005–2026 | ✓ — P221, P558, P702 |
| Ford F-350 Super Duty 4WD | 2005–2026 | ✓ — P221, P558, P702 |
| Super Duty 2WD | Any | ✗ No front coil spring — solid front axle |
| Ford F-450/F-550 | Any | ✗ Not compatible |
| Ford F-150 | Any | ✗ Different front suspension |
| Super Duty | 2004 and earlier | ✗ Different front suspension geometry |
Critical Compatibility
| Configuration | Notes |
|---|---|
| 2WD Super Duty | Not compatible — no front coil spring |
| This is a spacer kit only | Does not include shocks, control arms, or other leveling kit components — those are sold separately |
| Aftermarket front shocks | Confirm a Fox 2.0 (985-24-154) or Fox 2.5 HTO (987-24-000) shock matched to your exact generation |
Common Questions
Is this a complete leveling kit?
No. This is a bottom coil spacer kit only — it raises ride height 1.5" but does not include shocks or other components some complete leveling systems bundle.
Will this fix my truck leaning to one side?
Yes, that's one of its common uses — correcting driver-side lean in addition to general front leveling.
Why bottom mount instead of top mount?
Bottom-mount spacers preserve factory coil alignment and compression behavior, avoiding the harshness and unwanted preload that top-mount spacers can introduce.
What shock should I pair with this?
Confirm your exact Super Duty generation (P221, P558, or P702) and we'll match you to the correct Fox 2.0 or Fox 2.5 HTO part number for 1.5" of front lift.
The Obsidian Take
The AXFDL15 is for the 2005-2026 F-250/F-350 Super Duty 4WD owner who wants a clean, geometry-friendly 1.5" front lift — to level the stance, correct driver-side lean, or clear larger tires — without sacrificing spring rate or load capacity. Billet construction, Grade 10.9 hardware, hard-anodized finish, bottom-mount design that avoids the harshness of top-mount alternatives.
The honest framing: this is a spacer kit, not a complete leveling system. Budget separately for a compatible Fox shock matched to your exact Super Duty generation, and consider a caster correction kit if you tow or drive highway miles regularly.
Non-Returnable Notice: Once installed, this kit is non-returnable. Confirm drivetrain and Super Duty generation before ordering. A full front-end alignment is required after installation.
Manufacturer Data Disclaimer: Specifications sourced from Axiom Supply and authorized distributor documentation. Input data cited unconfirmed Fox shock part numbers — corrected above to the confirmed manufacturer SKUs from this catalog. Obsidian Forged Auto Supply is an authorized Axiom Supply dealer. Manufacturer specifications are subject to change without notice.