Rough Country 445-78-79.20 4 Inch Lift Kit · Rear Blocks Ford F-100/F-150 4WD (1977-1979)
- Front lift 4"
- Install 5-7 hours
Questions about fitment? Live chat or call 866-235-4715
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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
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 | Rough Country |
|---|---|
| Part number | 445-78-79.20 |
| UPC / GTIN | 8430301270910 |
| Front Lift Height | 4" |
| Front | Lifted Coil Springs Track Bar Drop Bracket 7 Degree C-Bushings Hardware |
| Rear | 2" Lift Blocks U-Bolts Hardware |
| Install time | 5-7 hours |
| Weight (lbs) | 102.00lbs |
| Country of Origin | USA |
| Warranty | Manufacturer’s Warranty Statement |
What's in the box
| Qty | Part | Description |
|---|---|---|
| — | — | Front: Lifted Coil Springs Track Bar Drop Bracket 7 Degree C-Bushings Hardware |
| — | — | Rear: 2" Lift Blocks U-Bolts Hardware |
Features
- Improved ground clearance: gain the extra height needed to confidently tackle uneven terrain, obstacles, and off-road challenges.
- Front-to-rear leveling: eliminates the factory rake for a more aggressive, balanced stance and improved handling dynamics.
- Fits 35-inch tires: provides the clearance needed to run up to 35" tall tires for a more aggressive look and better trail capability.
- Includes n3 shock absorbers: equipped with rough country's premium n3 shocks for improved ride quality and off-road performance.
Fitment
| Years | Vehicle |
|---|---|
| 1977-1978 | Ford F-150 4WD: Base, Northland |
| 1977-1979 | Ford F-150 4WD: Custom, Ranger, Ranger XLT |
| 1978-1979 | Ford F-150 4WD: Ranger Lariat |
| 1977 | Ford F-150 4WD: XLT |
Use the fit check above with your truck selected, or ask a specialist if your trim isn't listed.
Recommended wheels & tires
8 tire and wheel combinations from Rough Country.
| Tire | Wheel | Bolt Pattern | Offset | Note |
|---|---|---|---|---|
| 35x12.50R15 | Factory 15 | 5x5.5 | – | – |
| 33x12.50R15 | 15x10 | 5x5.5 | -39 | Trimming Required |
| 35x12.50R18 | 18x9 | 5x5.5 | -12 | – |
| 33x12.50R18 | 18x9 | 5x5.5 | -12 | – |
| 295/70R18 | 18x9 | 5x5.5 | -12 | – |
| 285/75R18 | 18x9 | 5x5.5 | -12 | – |
| 295/70R18 | 18x10 | 5x5.5 | -25 | – |
| 35x12.50R22 | 22x10 | 5x5.5 | -25 | Trimming Required |
Installation
- Estimated install time5-7 hours
Free install support from the Trucks R Us tech team, for you or your shop.
Overview
Bold Stance, Better Clearance: Transform your Ford with Rough Country's 4" Suspension Lift Kit, delivering a more aggressive, leveled look from front to rear. This system eliminates the factory rake for a balanced stance while improving ground clearance to take on uneven terrain and off-road challenges with confidence. Performance-Driven Components: The kit includes a set of durable front coil springs for enhanced ride height without sacrificing comfort or performance. Application-specific 7-degree C-bushings and a track bar drop bracket maintain proper geometry and alignment, ensuring a factory-like ride quality even after lifting. Premium N3 Shock Absorbers: This kit features Rough Country's nitrogen-charged N3 shocks, precision-tuned with a 10-stage variable valving system, 18mm piston rods, and fast-cooling 54mm shock bodies for enhanced off-road handling and smooth highway ride quality. Ready for 35-Inch Tires: Gain the clearance needed to run up to 35" tires, giving your truck a more aggressive profile and increased off-road capability, all with proper wheel backspacing. Built to Last: Backed by Rough Country's Limited Lifetime Replacement Warranty, this 4" Ford Suspension Lift Kit combines rugged durability with confidence-inspiring performance, on and off the road.
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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About Rough Country
Rough Country is a leading manufacturer and distributor of off-road accessories and suspension systems. Built on a foundation of American values and rooted in Tennessee, we use our expertise of trucks, Jeeps, and UTVs to help people drive their passions... Shop all Rough Country