Zone Offroad F91N Lift Kit — 4" Front | Nitro Shocks | Clears 35" Tires | Entry Price Point | 2021–2026 Ford F-150 4WD | Non-CCD · Non-Tremor · Non-Raptor
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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
Four inches of lift. Thirty-five-inch tire clearance. Nitro shocks. Entry price point.
Before ordering — confirm your F-150 is 4WD, is not a Raptor or Tremor, does not have factory CCD, and is 2021 or newer. Miss any of those and you're in the wrong kit.
The Zone Offroad F91N delivers 4 inches of front lift on the 2021–2026 F-150 4WD platform with corrected caster, camber, and scrub radius geometry via heavy-duty crossmembers and steering knuckles. Differential drop brackets correct CV axle angles at lifted height. Nitro gas shocks valved for the lifted F-150 4WD geometry are included front and rear. Clears 35-inch tires per manufacturer specification — verify clearance with your specific wheel offset before ordering. This is the entry price point in the Zone Offroad 2021–2026 F-150 4WD 4-inch lineup. Want Fox Adventure shocks instead? Order F91F.
| Spec | Detail |
|---|---|
| SKU | F91N |
| Brand | Zone Offroad |
| Platform | 2021–2026 Ford F-150 4WD — non-CCD · non-Tremor · non-Raptor |
| Front lift | 4 inches |
| Shock type | Nitro gas — front and rear, valved for lifted F-150 4WD geometry |
| Tire clearance | Clears 35-inch tires per manufacturer specification — verify wheel offset |
| Drivetrain | 4WD only — does NOT fit 2WD |
| Shipping weight | 207 lbs — LTL freight, residential delivery included |
| Fox shock upgrade | F91F — same kit, Fox Adventure Series shocks |
| 6-inch Nitro alternative | F90N — 6-inch front lift, Nitro shocks, same platform |
| 6-inch Fox alternative | F90F — 6-inch front lift, Fox Adventure shocks, same platform |
| CCD alternative | F103 — CCD shock relocation, no shocks, CCD F-150 only |
| Tremor alternative | F107N (Nitro) / F107F (Fox 2.0) — Tremor-specific, 5-inch front |
| Alignment required | Yes — full 4-wheel alignment mandatory post-installation |
| Re-torque required | Yes — all suspension fasteners after 500 miles of break-in |
| Install difficulty | Professional installation required |
F91N vs F91F — the only difference is the shock:
| Kit | Shocks | Price Point | Geometry |
|---|---|---|---|
| F91N (this kit) | Nitro gas | Entry | Identical |
| F91F | Fox Adventure Series | Premium | Identical |
Same crossmembers, knuckles, strut spacers, differential drop brackets, and rear lift components throughout. The geometry correction is identical — the choice is shock quality versus budget. Fox Adventure shocks deliver improved damping consistency over Nitro, particularly on rough terrain and highway inputs. If the geometry correction is the priority and budget matters, F91N is the correct call.
F91N vs F90N — 4-inch vs 6-inch:
| Kit | Front Lift | Tire Clearance | CV Angle Demand |
|---|---|---|---|
| F91N (this kit) | 4" | 35" | Moderate |
| F90N | 6" | 35"+ | Higher |
Four inches keeps CV axle angles in a more comfortable operating range than 6 inches — the better choice for daily-driven builds where long-term CV health matters. Both clear 35-inch tires per spec.
Kit contents:
- Heavy-duty front crossmembers
- Steering knuckles
- Strut spacers
- Differential drop brackets
- Rear lift components
- Nitro gas shocks — front and rear
- All required hardware
✅ This kit fits — 2021–2026 F-150 4WD (non-CCD, non-Tremor, non-Raptor)
| Vehicle | Drivetrain | Model Years | Exclusions |
|---|---|---|---|
| Ford F-150 | 4WD only | 2021–2026 | No CCD · No Tremor · No Raptor |
❌ This kit does NOT fit — read before ordering
| Vehicle / Configuration | Reason | Correct Kit |
|---|---|---|
| Ford F-150 2WD / RWD | Different suspension architecture | 2WD-specific lineup |
| 2020 and earlier Ford F-150 | Different platform generation | — |
| Ford F-150 Raptor | Different factory suspension platform | — |
| Ford F-150 Tremor | Tremor-specific geometry required | F107N (Nitro) / F107F (Fox 2.0) |
| F-150 with factory CCD | Standard kit destroys CCD adaptive damping | F103 |
| Ford F-250 / F-350 Super Duty | Incompatible platform | — |
⚠️ CCD owners — critical: Installing a standard lift kit on a CCD-equipped F-150 destroys the factory electronic adaptive damping system. Check your window sticker for "Continuously Controlled Damping" or option code 60S on the door jamb before ordering. If CCD is confirmed, order F103.
⚠️ Tremor owners: Tremor-specific geometry requires F107N or F107F — standard F-150 kits will not fit correctly on the Tremor platform.
Before You Buy — Questions We Get Asked
Q: What's the difference between F91N and F91F?
One thing — the shock package. Both kits use the same heavy-duty crossmembers, steering knuckles, strut spacers, differential drop brackets, and rear lift components on the same 2021–2026 F-150 4WD platform at 4 inches of front lift. F91N includes Nitro gas shocks at the entry price point. F91F includes Fox Adventure Series shocks with improved damping consistency. Same geometry. Same 35-inch tire clearance. Choose based on shock preference and budget.
Q: Why choose 4 inches over 6 inches?
At 4 inches of front lift, CV axle angles stay within a more comfortable operating range than at 6 inches — reduced wear on CV joints and steering components for daily-driven builds. Both F91N and F90N clear 35-inch tires per spec. For a daily driver where long-term CV health and on-road compliance matter, F91N. For maximum lift height and aggressive builds where the extra 2 inches justifies the added geometry demand, F90N.
Q: Does this clear 35-inch tires?
Yes — Zone Offroad confirms 35-inch tire clearance at 4 inches of front lift. Verify clearance with your specific wheel offset and tire combination before ordering — wheel offset affects clearance independently of lift height.
Q: How does this ship?
This kit ships via LTL freight carrier at 207 lbs. Residential delivery is included — the freight carrier will contact you to schedule a delivery window. Professional installation is required. Budget for a full 4-wheel alignment at the time of install and a re-torque appointment at 500 miles.
The Obsidian Take
The F91N is for the 2021–2026 F-150 4WD owner who wants 4 inches of front lift with 35-inch tire clearance at the entry price point — and who has confirmed their truck is not a Raptor, not a Tremor, and not CCD-equipped. Four inches keeps CV axle angles in a comfortable operating range while delivering the stance and tire clearance most daily-driven builds need. The geometry correction is identical to the Fox version — crossmembers, knuckles, differential drop brackets, rear lift components all the same. Nitro gas shocks valved for the lifted F-150 4WD geometry handle the suspension load correctly. The difference between F91N and F91F is purely the shock package — if Fox Adventure damping performance is worth the step up for your build, order F91F.
This kit is not for CCD-equipped F-150 owners — standard lift kits destroy the adaptive damping system on CCD trucks, order F103. It is not for Tremor owners — Tremor-specific geometry requires F107N or F107F. It is not for Raptor owners. It is not for 2WD owners. It is not for 2020 or earlier F-150 owners. For maximum lift height where the extra 2 inches of front clearance is the priority, step up to F90N.
Product information is compiled from manufacturer-provided data. Obsidian Forged Auto Supply is not responsible for manufacturer-driven specification updates, metadata changes, or accuracy discrepancies in the foundational data sheets.
⚠️ LTL Freight Notice: This item ships via freight carrier due to size and weight. Residential delivery is included. Freight carrier will contact you to schedule delivery.
2021–2026 Ford F-150 4WD only. CCD — order F103. Tremor — order F107N. Raptor does not fit. 2WD does not fit. Fox Adventure shocks instead — order F91F.