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★★★★★ 4.9 (625 Google reviews) · Marietta shop · 📞 (678) 400-6467 · 🗺️ Get Directions · Live From The Shop
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Rough Country · Authorized Dealer

4 Inch Lift Kit | Rear Blocks | Ford Bronco 4wd (1978-1979)

Part #: 450.20UPC: 843030127107Brand: Rough Country

$479.95

Price does not include installation.

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*Estimated lease-to-own payment. Final approval and terms are determined by the lender. See all financing options →

🛠️ Install available in Marietta, GA

Installed and serviced at Road Runner Wheels & Tires — 1585 Roswell Rd, Marietta, GA 30062. Call (678) 400-6467 to schedule.

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Built for 1978–1979 Ford Bronco owners who want a level, aggressive stance with room for bigger tires, this 4-inch lift kit raises your front end to match the rear, delivering a flush appearance and improved ride height. You'll gain up to 35 inches of tire clearance while maintaining factory-like ride geometry through corrected caster angles and factory-spec suspension geometry.

Installed and serviced at Road Runner Wheels & Tires. Most lift kits go in the same day. Call (678) 400-6467 to schedule.

What's included

  • 4-inch N3 Shock Kit — Premium nitrogen-charged shocks with 10-stage variable damping, 18mm spring-loaded piston rod, and 54mm shock body for smooth highway ride and off-road performance.
  • Lifted coil springs — Front suspension springs engineered to raise ride height without sacrificing ride quality.
  • 7-degree C-bushings — Corrects caster angle after lifting to maintain factory suspension geometry and steering feel.
  • Track bar drop bracket — Repositions the track bar to keep front-end geometry optimized.
  • 3-inch rear lift blocks — Fabricated steel blocks (stronger than cast-iron) that level the rear with your new front height.
  • U-bolts and installation hardware — Everything needed to secure the rear blocks and complete the install.

Important notes

  • Vehicles equipped with factory quad shocks (two shocks per front side) will use one aftermarket shock per side as part of this kit.
  • A drop pitman arm is recommended for optimum turning radius and drag link alignment — the OE pitman arm will NOT work if it has a welded ball joint on the end. Rough Country drop pitman arm #6602 is available separately.
  • Proper wheel backspacing is critical to fit 35-inch tires; consult with Road Runner during your quote.

Why customers pick this at Road Runner

  • Rough Country Lifetime Replacement Warranty backed locally — any defect covered for life.
  • Professionally installed by technicians who perform these lifts every week — your Bronco gets the attention it deserves.
  • Alignment performed in-house as part of every lift install — corrected caster and geometry dialed in before you leave.
  • All components tested on the same year and trim — you get the exact fit Rough Country engineered for your Bronco.

Ready to build it? Call (678) 400-6467. Hablamos Español.

QtyPartPart #
13 Inch Block & U-Bolt Kit | Ford Bronco 4WD (1978-1979)6542
1Installation Kit | Ford Bronco (78-79) Ford F-100 (70-79)7516
14in Coils | Ford Bronco (78-79) Ford F-100 (70-79)9260
17 Degreee C Bushings | Ford Bronco (78-79) Ford F-100 (70-79)6022
14in N3 Shock Kit | Ford Bronco (78-79)145020

Features

  • Increased ground clearance
  • Levels the front with the rear of the vehicle
YearsMakeModelDrive
1978FordBronco Northland4WD
1978-1979FordBronco Custom4WD
1978-1979FordBronco Ranger XLT4WD
  • Tire size: 33″ to 35″ tall
  • Lift height: 4″
TireWheelOffset
35x12.50R15Factory 15-mm
33x12.50R1616x8+30mm
35x12.50R2222x10-19mm
295/55R2222x10-19mm
285/55R2222x10-19mm
35x12.50R2222x10-18mm
295/55R2222x10-18mm
285/55R2222x10-18mm
35x12.50R2222x12-44mm
  • Install time: 5-7 hours
New rear blocks replace the factory rear block. A drop pitman arm is recommended for optimum turning radius and drag link alignment. (#6602) (#6602) pitman arm will NOT work if the original arm has a welded ball joint on the end. Vehicles with factory quad shocks (2 front shocks per side) will simply use a single aftermarket shock.

Rough Country Lifetime Replacement Warranty covers all structural components against defects in materials and workmanship for the original purchaser's lifetime ownership of the vehicle.

3-Year Finish Warranty on all painted and powder-coated surfaces.

3-Year Shock Warranty on N3, M1, and Vertex shocks against leakage and structural failure.

Warranty service is handled by Rough Country directly — call (678) 400-6467 if you need help opening a warranty claim and we'll walk you through it.