
Rough Country · Authorized Dealer
4 Inch Lift Kit | Rear Springs | Ford F-100 4wd (1970-1976)
$779.95
Price does not include installation.
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🛠️ 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.
Built for Ford F-100 owners who want a bold, leveled stance and extra tire clearance without sacrificing ride quality — this 4-inch lift kit raises your truck's front end to eliminate factory rake and accommodate up to 35-inch tires. You get heavy-duty front coil springs with geometry-correcting C-bushings, application-specific rear leaf springs, and premium nitrogen-charged N3 shocks that deliver smooth performance both on the highway and off-road.
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 Front Coil Springs — Heavy-duty springs engineered to raise ride height while maintaining ride quality and factory-like handling characteristics.
- 7-Degree C-Bushings (qty 1) — Correct caster angle and suspension geometry to preserve driveline angles and prevent premature wear.
- Track Bar Bracket — Repositions the track bar to maintain proper suspension geometry at the increased ride height.
- 4-inch Rear Leaf Springs (qty 2) — Application-specific rear springs deliver proper fitment, ride quality, and load-carrying support tailored to your F-100.
- N3 Shock Absorbers (qty 2 pairs) — Nitrogen-charged, 10-stage velocity-sensitive shocks with 54mm bodies and 18mm piston rods for superior damping and durability.
- U-Bolts & Installation Hardware — All fasteners and brackets needed for secure mounting and proper suspension alignment.
Important notes
- This kit is designed only for Ford F-100 models equipped with 3-inch wide rear leaf springs. Confirm your truck's rear spring width before ordering.
- To run the full 35-inch tire clearance, ensure your wheels have proper backspacing to avoid rubbing at full articulation.
Why customers pick this at Road Runner
- Rough Country Limited Lifetime Replacement Warranty backed by our local expertise — we stand behind every kit we install.
- Professional installation by technicians who perform lift kits on classic Ford trucks every week; alignment performed in-house as part of the job.
- Geometry correction built in — C-bushings and track bar bracket preserve driveline angles so your truck handles like stock, just taller.
- N3 nitrogen shocks come pre-assembled and tuned to this specific application — no guesswork, no aftermarket shock selection delays.
Ready to build it? Call (678) 400-6467. Hablamos Español.
| Qty | Part | Part # |
|---|---|---|
| 2 | 4in Rear Leaf Spring | Ford Bronco (78-79)/F-250 (77-79) 4WD | 8033 |
| 1 | Installation Kit | Ford Bronco (78-79) Ford F-100 (70-79) | 7516 |
| 1 | Universal U-Bolt Kit | 7643 |
| 1 | 4in Coils | Ford Bronco (78-79) Ford F-100 (70-79) | 9260 |
| 1 | 7 Degreee C Bushings | Ford Bronco (78-79) Ford F-100 (70-79) | 6022 |
| 1 | N3 Shock Pair | 23148 |
| 1 | N3 Shock Pair | 23282 |
Features
- Enhanced Ground Clearance: Increases ride height to confidently handle off-road obstacles and uneven terrain.
- Level Front-to-Rear Stance: Eliminates factory rake for a balanced and aggressive profile.
- Application-Specific Rear Leaf Springs: Tailored rear springs deliver proper fitment, ride quality, and support under load.
- Premium N3 Shock Absorbers: Nitrogen-charged shocks offer superior damping performance on and off the road.
- 35-Inch Tire Clearance: Provides enough lift and clearance to run up to 35" tires without trimming.
| Years | Make | Model | Drive |
|---|---|---|---|
| 1970-1976 | Ford | F-100 Base | 4WD |
| 1975-1976 | Ford | F-100 Custom | 4WD |
| 1975-1976 | Ford | F-100 Northland | 4WD |
| 1975-1976 | Ford | F-100 Ranger | 4WD |
| 1975-1976 | Ford | F-100 Ranger XLT | 4WD |
| 1976 | Ford | F-150 Base | 4WD |
| 1976 | Ford | F-150 Custom | 4WD |
| 1976 | Ford | F-150 Northland | 4WD |
| 1976 | Ford | F-150 Ranger | 4WD |
| 1976 | Ford | F-150 Ranger XLT | 4WD |
- Tire size: 33″ to 35″ tall
- Lift height: 4″
| Tire | Wheel | Offset |
|---|---|---|
| 35x12.50R15 | Factory 15 | -mm |
| 33x12.50R15 | 15x8 | -19mm |
| 33x12.50R15 | 15x8 | -18mm |
| 33x12.50R15 | 15x10 | -39mm |
| 35x12.50R18 | 18x9 | -12mm |
| 33x12.50R18 | 18x9 | -12mm |
| 295/70R18 | 18x9 | -12mm |
| 285/75R18 | 18x9 | -12mm |
| 295/70R18 | 18x10 | -25mm |
| 35x12.50R22 | 22x10 | -25mm |
- Install time: 5-7 hours
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.
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