77-79 Ford F-100/F-150 4WD 4 Inch Lift Kit | Rear Springs - Rough Country

Brand: Rough Country

Part number: 500-77-79.20

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Rough Country 4 Inch Lift Kit | Rear Springs for the 77-79 Ford F-100/F-150 4WD

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.Rear Lifted Leaf Springs for Strength and Support: Engineered for dependability, the included rear leaf springs are double-tapered and feature Teflon pad inserts to improve ride comfort while offering consistent lift and added load support.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.

  • 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
  • Rear Lifted Leaf Springs: Includes application-specific rear leaf springs designed to provide dependable lift, load support, and long-lasting durability
  • 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
Front Components Rear Components
  • Lifted Coil Springs\
  • Track Bar Drop Bracket\
  • 7 Degree C-Bushings\
  • Hardware
  • Lifted Leaf Springs\
  • U-Bolts\
  • Hardware

Fitment: 
YearMakeModelDrive
1977-1979FordF-1504WD

Tire SizeWheel SizeBolt PatternOffsetTrimming Note
35x12.50R15Factory 155x5.5
35x12.50R1515x85x5.5-19
35x12.50R1515x85x5.5-18
35x12.50R1515x105x5.5-39Trimming Required
35x12.50R1616x85x5.5-12
35x12.50R1616x85x5.5-6
35x12.50R1717x8.55x5.5+0
35x12.50R1717x8.55x5.5+1
35x12.50R1717x95x5.5-12
35x12.50R1717x95x5.5+0
315/70R1717x95x5.5+0
35x12.50R1717x95x5.5+1
315/70R1717x95x5.5+1
35x12.50R1818x95x5.5-12
295/70R1818x95x5.5-12
35x12.50R1818x95x5.5+0
295/70R1818x95x5.5+0
35x12.50R1818x95x5.5+1
295/70R1818x95x5.5+1
35x12.50R1818x105x5.5-25
295/70R1818x105x5.5-25
35x12.50R1818x105x5.5-19
295/70R1818x105x5.5-19
35x12.50R1818x105x5.5-18
295/70R1818x105x5.5-18
35x12.50R2020x95x5.5-12
35x12.50R2020x95x5.5+0
35x11.50R2020x95x5.5+0
35x12.50R2020x95x5.5+1
35x11.50R2020x95x5.5+1
35x12.50R2020x105x5.5-25Minor Trimming
35x12.50R2020x105x5.5-19Minor Trimming
35x12.50R2020x105x5.5-18Minor Trimming
35x12.50R2222x105x5.5-25Minor Trimming
35x12.50R2222x105x5.5-19Minor Trimming
35x12.50R2222x105x5.5-18Minor Trimming
35x12.50R2222x125x5.5-44Trimming Required



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