Zone Offroad F113N Lift Kit — 6" Front / 3" Rear | Nitro Shocks | 2017–2019 Ford F-250 / F-350 4WD | Gas Engine Only | 3-Leaf Main Spring Pack Only
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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
Two fitment gates. Both must be confirmed before ordering.
This is not a universal Super Duty lift kit. Before anything else — confirm your engine and count your rear leaf springs. The F113N fits the 2017–2019 F-250 and F-350 4WD with a gas engine and a 3-leaf main spring pack. Miss either gate and you're ordering the wrong kit.
The Zone Offroad F113N delivers 6 inches of front lift and 3 inches of rear lift on the 2017–2019 Super Duty IFS platform. Heavy-duty crossmembers and steering knuckles correct caster, camber, and scrub radius geometry at lifted height. The 3-leaf main spring pack provides sufficient rear load support at 3 inches of block height without requiring an add-a-leaf. Nitro gas shocks valved for the lifted Super Duty geometry are included front and rear. This is the lowest price point in the Zone Offroad 2017–2019 Super Duty gas lineup.
| Spec | Detail |
|---|---|
| SKU | F113N |
| Brand | Zone Offroad |
| Platform | 2017–2019 Ford F-250 / F-350 4WD — IFS platform |
| Front lift | 6 inches |
| Rear lift | 3 inches — block spacer only, no AAL required with 3-leaf pack |
| Shock type | Nitro gas — front and rear, included and valved for lifted geometry |
| Engine | Gas only — does NOT fit 6.7L Powerstroke or any diesel |
| Spring pack | 3-leaf main spring pack ONLY — does not fit 2-leaf or 4-leaf |
| Rear suspension | Leaf spring with 3-inch block spacer |
| Drivetrain | 4WD only |
| Shipping weight | 193 lbs — LTL freight, residential delivery included |
| Fox shock alternative | F113F — same kit, Fox Adventure shocks |
| 2-leaf spring pack alternative | F112N (Nitro) / F112F (Fox) — AAL + 4" rear block |
| 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 |
Why the 3-leaf spring pack matters — and why you need to count before ordering: The rear block height and add-a-leaf requirement are determined by how many leaves your factory rear spring pack has. The 3-leaf main spring pack provides sufficient structural support at 3 inches of block height without needing an add-a-leaf — that's why this kit ships without one. If your rear spring pack has 2 leaves, a 3-inch block without an AAL introduces axle wrap risk — order F112N or F112F instead. If you have 4 leaves or a non-standard configuration, text us before ordering.
Kit contents:
- Heavy-duty front crossmembers
- Steering knuckles
- Strut spacers
- Differential drop brackets
- 3-inch rear block spacer
- Nitro gas shocks — front and rear
- All required hardware
✅ This kit fits — two gates, both required
| Vehicle | Engine | Drivetrain | Spring Pack | Years |
|---|---|---|---|---|
| Ford F-250 Super Duty SRW | Gas only | 4WD | 3-leaf main | 2017–2019 |
| Ford F-350 Super Duty SRW | Gas only | 4WD | 3-leaf main | 2017–2019 |
❌ This kit does NOT fit — read before ordering
| Vehicle / Configuration | Reason | Correct Kit |
|---|---|---|
| F-250 / F-350 with 6.7L Powerstroke diesel | Gas engine only | — |
| F-250 / F-350 with 2-leaf main spring pack | Block height requires AAL — insufficient support | F112N (Nitro) / F112F (Fox) |
| F-250 / F-350 with 4-leaf or non-standard spring pack | Not confirmed — text us before ordering | — |
| F-250 / F-350 2WD / RWD | 4WD IFS platform only | — |
| 2016 and earlier Ford Super Duty | Different generation platform | — |
| 2020 and newer Ford Super Duty | Different generation platform | — |
| Ford F-350 DRW (Dually) | Confirm separately before ordering | — |
| Ford F-150 | Incompatible platform | — |
Engine: Gas engine only. The 6.7L Powerstroke diesel and all diesel configurations are not compatible. Check your door jamb sticker or window sticker for your engine code before ordering.
Spring pack: Count your rear leaf springs before ordering. Three leaves — this kit. Two leaves — order F112N or F112F. The kit is engineered for 3-leaf load support at 3 inches of block height. Installing on a 2-leaf pack without an AAL introduces axle wrap risk under load.
⚠️ 2020+ Super Duty owners: The 2020 Super Duty is a different generation platform. This kit does not fit — text (469) 407-7538 with your year and we'll confirm the correct kit.
⚠️ F-350 DRW owners: Dually fitment requires separate confirmation. Text (469) 407-7538 with your year, engine, and spring pack before ordering.
Before You Buy — Questions We Get Asked
Q: What's the difference between F113N and F113F?
Same kit — same heavy-duty crossmembers, steering knuckles, strut spacers, differential drop brackets, and 3-inch rear block. Same 3-leaf spring pack requirement and gas-only engine restriction. The only difference is the shock package. F113N includes Nitro gas shocks at the lowest price point in this lineup. F113F includes Fox Adventure shocks. If Fox is the priority, order F113F.
Q: What's the difference between F113N and F112N?
Both cover the same 2017–2019 4WD gas platform at 6 inches of front lift. The F112N is for trucks with a 2-leaf main spring pack — it includes an add-a-leaf and a 4-inch rear block because the 2-leaf pack needs the additional spring support at that block height. The F113N is for trucks with a 3-leaf main spring pack — the 3-leaf pack provides sufficient support at 3 inches of block height without an AAL, so a 3-inch block without an add-a-leaf is the correct rear configuration. Count your leaves before ordering.
Q: How do I know if I have a 2-leaf or 3-leaf spring pack?
Get under the rear of the truck and count the steel leaf springs in the main spring pack. Do not count any overload springs that sit above the main pack with a gap between them — count only the leaves in the main stack. Two leaves — F112N. Three leaves — F113N. If your count doesn't match either or you're unsure, text (469) 407-7538 with your year, trim, and any tow package codes and we'll confirm before you order.
Q: How does this ship and what do I need to know?
This kit ships via LTL freight carrier at 193 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 F113N is for the 2017–2019 Super Duty gas owner who has confirmed both fitment gates — gas engine and 3-leaf main spring pack — and wants the maximum front lift available for this platform at the lowest price point in the Zone Offroad lineup. Heavy-duty crossmembers and steering knuckles correct the caster, camber, and scrub radius geometry that a 6-inch lift demands. The 3-leaf spring pack's structural capacity means no add-a-leaf is required at 3 inches of rear block height — the factory spring pack does the job. Nitro gas shocks valved for the lifted Super Duty geometry are included front and rear. One kit, one freight delivery, one professional installation session.
This kit is not for diesel owners — gas engine only, no exceptions. It is not for trucks with a 2-leaf main spring pack — the 3-inch block without an add-a-leaf is not safe on a 2-leaf pack under load, order F112N or F112F. It is not for 2016 or earlier Super Duty owners. It is not for 2020 or newer Super Duty owners — different platform generation. F-350 DRW owners need to confirm separately before ordering. If Fox Adventure shocks matter more than price, order F113F. And count your rear leaf springs before you check out — that's the gate that most people skip.
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.
2017–2019 Ford F-250 / F-350 4WD. Gas engine only — diesel does not fit. 3-leaf main spring pack only — 2-leaf owners order F112N. Fox shocks instead — order F113F.