Zone Offroad 4 Inch Lift Kit w/ Radius Arm Ford F250/F350 Super Duty (05-07) 4WD · Diesel
- Front lift 4"
- Max tire 35 x 12.5
- Rear lift 3"
- Shocks included
- Install 6 hrs
- Difficulty Moderately Easy
Questions about fitment? Live chat or call 866-235-4715
Complete your build
Optional add-ons
Accessories
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- Free shippingMost orders $500+
- 30-day returnsSee policy
- Warranty supportWe work with the maker
Questions about fitment?
Talk to a TRU specialist
We’ll help you verify fitment before you buy.
Veteran-owned · Austin, Texas · Mon–Fri 9:30a–11:00a & 1:00p–5:30p CT
Important notes before you order
- If your vehicle is equipped with a top mounted overload/helper spring, 4 longer U-bolts may be required. Add UBT4035 HERE!
- Two-piece rear drive shaft? Add a carrier bearing drop kit to reduce post-lift driveline angles and avoid / eliminate driveshaft vibration.
TRU specialist notes
From the Trucks R Us fitment and install team, beyond the manufacturer's information.
- Plan for a professional wheel alignment after installing any lift or leveling kit.
- Going to bigger tires as well? Speedometer recalibration may be needed, and some tire and wheel combinations need trimming. Check the recommended wheels and tires, or ask us before you order.
Specifications
| Brand | Zone Offroad |
|---|---|
| Part number | ZONF21F |
| UPC / GTIN | 810156365300 |
| Front Lift Height | 4" |
| Front Lift Method | Coil Spring & Drop Bracket |
| Max Tire Size | 35 x 12.5 |
| Rear Lift Height | 3" |
| Rear Lift Method | Block |
| Shocks Included | Yes |
| Install time | 6 hrs |
| Difficulty | Moderately Easy |
What's in the box
| Qty | Part | Description |
|---|---|---|
| — | — | ZONF21F – FOX 2.0 Adventure Series(2) FOX98450712 Fox Adv Shock 25.15 x 15.55 x 2-S50/EB1 |
| 2 | FOX98450763 | Fox Adv Shock 33.85 x 20.76 x 2-EB1/EB1 |
| 2 | ZONF1413 | Coil Spring Box Kit: 2005-2019 4” / 2020+ 5” Ford F250/F350 Super Duty Front Diesel Coil Spring (Single) |
| 1 | ZONF1414 | 2005-2009 Ford F250/350 4" Rear Box Kit |
| 1 | ZONF1421 | 2005-2007 Ford Super Duty Box Kit |
| 2 | ZONF1601 | 2005-2022 Ford Super Duty Radius Arm (One) |
| — | — | ZONF21N – Nitro Series(2) ZON7712 Nitro- 24.50 x 14.50 x 2-3/8 - S50/EB2 |
| 2 | ZON7763 | Nitro- 33.00 x 19.25 x 2-3/8 - EB1/EB1 |
| 2 | ZONF1413 | Coil Spring Box Kit: 2005-2019 4” / 2020+ 5” Ford F250/F350 Super Duty Front Diesel Coil Spring (Single) |
| 1 | ZONF1414 | 2005-2009 Ford F250/350 4" Rear Box Kit |
| 1 | ZONF1421 | 2005-2007 Ford Super Duty Box Kit |
| 2 | ZONF1601 | 2005-2022 Ford Super Duty Radius Arm (One) |
Features
- Full length replacement coil springs add additional ride height while maintaining ride quality.
- Heavy-duty track bar re-centers front axle, adds strength and limits lateral movement.
- High-strength, 1/4" steel construction corrects caster, improves tire clearance, and maximizes ground clearance.
- Rear lift block and longer U-bolts for easy installation and level stance.
Recommended wheels & tires
- Note: trimming may be required.
- 35 x 12.5 with 17 x 9 and 4.5 in. Backspace
- 35 x 12.5 with 18 x 9 and 4.5 in. Backspace
- 35 x 12.5 with 20 x 9 and 4.5 in. Backspace
Installation
- Estimated install time6 hrs
- DifficultyModerately Easy
Free install support from the Trucks R Us tech team, for you or your shop.
Overview
Shock Option
Nitro Series
- Nitrogen-charged
- Twin-tube design
- 10-stage velocity-sensitive valving
- Dual-welded ends for increased strength
- Self-lubricating seals
- Black powder coat finish
FOX 2.0 Adventure Series
- 2-inch diameter steel body
- Internal floating piston (IFP) monotube design
- Large 5/8-inch hard chrome plated heat-treated alloy steel shaft
- Race-developed high-flow piston design
- Application-specific valving to maximize performance
- Long-lasting clear anodized finish
Questions
Will this fit my truck?
Select your truck at the top of the page and the fit check will confirm it. If your exact trim is not listed, call 866-235-4715 or live chat and a fitment specialist will check it before you order.
Do you help with installation?
Yes. Our technical team helps you or your shop with installation and troubleshooting after delivery, on top of the manufacturer’s support.
What if the part has a problem?
We work the warranty claim with the manufacturer on your behalf, within the manufacturer’s warranty policy.
Can I return it?
Most items can be returned within 30 days. See our return policy for details.
Do I need an alignment after installing?
Yes. Any lift or leveling kit changes suspension geometry, so get a professional alignment after installation.
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