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Skyjacker SKYF2145BKN 4.5-Inch Suspension Lift Kit for Ford F-150 4WD (2021-2022)

The Skyjacker SKYF2145BKN 4.5-Inch Suspension Lift Kit is a comprehensive suspension upgrade designed specifically for 2021-2022 Ford F-150 4WD trucks. Engineered to provide additional ground clearance for larger tires while maintaining factory ride quality and steering geometry, this all-inclusive system features heavy-duty crossmembers, ductile iron steering knuckles, differential relocation brackets, brake line extensions, and rear Nitro shocks. The kit is designed to preserve OEM suspension performance, Electronic Stability Control (ESC) functionality, and proper drivetrain angles for dependable on-road and off-road performance.

Key Benefits

  • Provides 4.5 inches of suspension lift for increased ground clearance.
  • Accommodates larger, more aggressive wheel and tire combinations.
  • Maintains factory ride quality using OEM front struts.
  • Preserves proper steering geometry and track width.
  • Corrects CV axle and driveshaft operating angles.
  • Compatible with factory Electronic Stability Control (ESC) systems.
  • Includes differential protection and suspension reinforcement components.
  • Enhances off-road capability without compromising daily driving comfort.
  • Complete kit includes major suspension, driveline, and installation components.

Key Features

  • 4.5-inch suspension lift system.
  • CNC-machined ductile iron steering knuckles.
  • Precision-engineered front strut spacers with pitch and index correction.
  • Front and rear heavy-duty steel crossmembers.
  • Differential relocation bracket system.
  • Differential skid plate reinforcement.
  • Front and rear brake line relocation components.
  • Rear lift blocks and extended Grade 8 U-bolts.
  • Rear spring shackles included.
  • Carrier bearing drop bracket included.
  • Nitro rear shocks for enhanced ride control.
  • Complete installation hardware package.

Technical Specifications

SpecificationDetails
ManufacturerSkyjacker
Part NumberSKYF2145BKN
Lift Height4.5 in
Vehicle ApplicationFord Full-Size Truck (2021-2022)
Extended Steering KnucklesYes
Steering Knuckle MaterialDuctile Iron
Front Coil Spring SpacersYes
Differential Drop BracketsYes
Front CrossmemberIncluded
Rear CrossmemberIncluded
Crossmember MaterialSteel
Crossmember ColorBlack
Crossmember FinishPaint
Leaf Spring BlocksIncluded
Rear Spring ShacklesIncluded
Rear Shackle MaterialSteel
Rear Shackle ColorBlack
Rear Shackle FinishPaint
Extended Brake Line BracketsIncluded
Extended Brake LinesIncluded
U-Bolts IncludedYes
Carrier Bearing Drop BracketIncluded
Hardware IncludedYes
QuantityComplete Kit

Usage & Application

Designed for truck owners who require increased suspension clearance for larger tires, improved off-road capability, and a more aggressive stance, this lift kit is ideal for work trucks, recreational off-road vehicles, overlanding builds, and daily-driven F-150s. The system is engineered to maintain factory drivability while delivering the additional height needed for demanding terrain.

Vehicle Compatibility

  • Ford F-150 4WD (2021-2022)
Note: Verify exact vehicle configuration, drivetrain, cab style, and factory suspension package prior to purchase.

Suspension Design & Durability

Skyjacker designed this lift system to retain factory suspension characteristics while improving clearance and durability. Heavy-duty steel crossmembers create a rigid mounting structure, while CNC-machined ductile iron steering knuckles maintain proper suspension geometry and OEM track width. Differential relocation brackets, driveshaft spacers, and carrier bearing components help ensure proper driveline operation after lifting.

Package Includes

  • Front crossmember
  • Rear crossmember
  • Extended steering knuckles
  • Front strut spacers
  • Differential drop brackets
  • Rear lift blocks
  • Rear spring shackles
  • Extended brake lines
  • Brake line relocation brackets
  • Carrier bearing drop bracket
  • U-bolts and lock nuts
  • Rear Nitro shocks
  • Installation hardware

Installation Notes

  • Designed as a complete bolt-on suspension lift solution.
  • Professional installation is recommended.
  • Wheel alignment is required after installation.
  • Tire fitment varies based on wheel offset and tire selection.
  • Includes required mounting hardware and installation components.
  • Designed to maintain compatibility with factory ESC systems when properly installed.

Ideal For

This lift kit is ideal for:
  • Ford F-150 owners seeking additional ground clearance.
  • Drivers upgrading to larger off-road tires.
  • Overlanding and adventure vehicle builds.
  • Off-road enthusiasts requiring improved obstacle clearance.
  • Truck owners wanting an aggressive lifted stance while retaining factory-like ride quality and handling characteristics.
  • ⚠️ Important Fitment Notes: Does NOT fit Regular/Single Cab models. Does NOT fit Raptor, Tremor, Diesel, or models with Continuously Controlled Damping (CCD) system. 18-inch diameter or larger wheels are required — OEM 17-inch and 18-inch diameter wheels cannot be reused.

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