ReadyLift 4" Coil Spring Lift Kit with Falcon Shocks - 2023-UP Ford Super Duty F250/F350 4WD
49-23420
ReadyLift 4-Inch Coil Spring Lift Kit with Falcon Shocks - 2023-UP Ford Super Duty F250/F350 4WD
Transform your 2023-and-newer Ford Super Duty F250 or F350 diesel into the ultimate daily-driven beast with ReadyLift's comprehensive 4-inch coil spring lift kit featuring Falcon 1.1 Monotube performance shocks. This complete suspension system delivers the perfect balance of aggressive stance, improved capability, and exceptional ride quality—making it the "sweet spot" for Super Duty owners who want maximum tire clearance without sacrificing everyday usability.
The Sweet Spot - 4 Inches of Lift
Many Super Duty enthusiasts consider 4 inches the perfect lift height. It's aggressive enough to clear 37-inch tires and provide commanding ground clearance, yet maintains excellent highway manners, towing stability, and ride comfort for daily driving duties. This isn't just a lift kit—it's a complete performance suspension upgrade engineered specifically for your application.
Falcon 1.1 Monotube Shocks - High-Value Performance
What sets this kit apart from basic spring-only lifts is the inclusion of four Falcon 1.1 Monotube performance shocks—two front and two rear—custom-tuned specifically for lifted Super Duty trucks:
Falcon 1.1 Technology:
- Monotube Construction: Single-tube design provides consistent damping and superior heat dissipation
- Increased Stability: Significantly improved handling and control over stock shocks
- Optimized Valving: Application-specific tuning for lifted Super Duty dynamics
- On-Road/Off-Road: Performs equally well on the highway or trail
- High-Value Performance: Professional-grade dampers at an accessible price point
The Falcon 1.1 shocks deliver race-inspired performance, handling, and stability that dramatically improves your truck's chassis performance both on and off road.
Complete Coil Spring System - Engineered for Super Duty
ReadyLift's coil spring lift system includes specially engineered coil springs developed specifically for 2023-up Super Duty trucks. These aren't universal springs—they're application-specific components designed to work with your truck's weight, suspension geometry, and payload capacity:
- Front Coil Springs: Precision-rated for front axle weight and lifted geometry
- Rear Fabricated Blocks: Quality steel blocks for proper rear lift height
- Track Bar Relocation Bracket: ReadyLift's proven design maintains proper track bar geometry
- Radius Arm Drop Brackets: Correct front suspension caster angle at the new ride height
Comprehensive Kit - Everything You Need
This isn't a partial lift kit that requires additional components. ReadyLift includes every component necessary for a professional installation:
- (4) Falcon 1.1 Monotube performance shocks (front and rear pairs)
- Front coil springs (pair)
- Rear fabricated steel lift blocks
- Track bar relocation bracket
- Radius arm drop brackets (correct caster angle)
- Brake line extension brackets (model-specific)
- Bump stop extension brackets
- Front sway bar frame mount extension brackets
- All necessary hardware and detailed instructions
Fits 37-Inch Tires - Head-Turning Stance
With 4 inches of lift, this kit provides clearance for aggressive 37-inch tall tires on 9-inch wide wheels with +18 to +25 offset (approximately 6-inch backspacing). Minor trimming of the front valance may be necessary depending on wheel and tire combination, but you'll achieve that head-turning stance with proper tire fitment.
Bolt-On Installation - No Cutting or Welding
Unlike some lift kits that require permanent modifications, the ReadyLift system is 100% bolt-on. No cutting, no welding, no structural modifications required. With basic tools and mechanical knowledge, this kit can be installed in approximately 6-8 hours. Professional installation and alignment are recommended.
Designed for Diesel 4WD - Single Rear Wheel Only
This kit is specifically engineered for 2023-up Ford Super Duty F250 and F350 diesel trucks with 4-wheel drive and single rear wheels (SRW). It is NOT recommended for:
- 2WD models
- Gasoline engine trucks
- Dual rear wheel (DRW) trucks
- Single cab configurations (not validated by ReadyLift)
Important: Tremor Models
Tremor-equipped Super Duty trucks will NOT gain the full 4 inches over stock ride height due to the factory Tremor suspension already sitting higher than standard models. Expect approximately 2-3 inches of additional lift on Tremor trucks.
Special Equipment Considerations
Onboard Scale Option: Trucks equipped with the factory "Onboard Scale" option will require the ReadyLift Auto-Leveling Headlight Bracket (PN: 67-23410, sold separately).
Smart Hitch & Auto Headlight Adjusters: Currently compatible with these features when using stock radius arms with drop brackets.
Ride Quality and Performance
ReadyLift's engineering focuses on delivering improved ride quality and performance over stock, not just height. The combination of application-specific coil springs and Falcon shocks provides:
- Better bump absorption and control
- Reduced body roll during cornering
- Improved towing stability with heavy loads
- Confident handling both on-road and off-road
- Comfortable daily driving experience
Important Note on Tire Selection
When upgrading to larger tires, remember that tire construction significantly affects ride quality. Most 37-inch off-road tires are E-rated (10-ply) compared to factory C-rated (6-ply) tires, which have stiffer sidewalls and can increase the perception of ride stiffness. Tire type (All-Terrain vs Mud-Terrain) also impacts ride, handling, noise, and fuel economy.
ReadyLift Quality and Warranty
ReadyLift Suspension has been manufacturing premium suspension components since 1998, known for innovation, quality, and customer satisfaction. Every ReadyLift product is engineered, tested, and backed by their industry-leading warranty.
Ready to Elevate Your Super Duty?
Take your 2023-up Ford Super Duty to new heights with the performance, capability, and ride quality that only a ReadyLift coil spring lift kit with Falcon shocks can deliver.
KEY FEATURES:
✅ 4" Front / 4" Rear Lift – Perfect "sweet spot" lift height
✅ Falcon 1.1 Monotube Shocks – Four performance shocks included
✅ Fits 37" Tires – Clearance for aggressive tire sizes
✅ Track Bar Relocation – Maintains proper suspension geometry
✅ Radius Arm Drops – Corrects caster angle
✅ 100% Bolt-On – No cutting or welding required
✅ Complete Kit – Everything included for installation
✅ 2023-UP Fitment – F250/F350 diesel 4WD single rear wheel
✅ Improved Ride Quality – Better than stock performance
✅ Made in USA – ReadyLift quality and engineering
TECHNICAL SPECIFICATIONS:
| Specification | Details |
|---|---|
| Part Number | 49-23420 |
| Manufacturer | ReadyLift Suspension |
| Front Lift Height | 4 inches |
| Rear Lift Height | 4 inches (via blocks) |
| Front Shocks | (2) Falcon 1.1 Monotube |
| Rear Shocks | (2) Falcon 1.1 Monotube |
| Front Lift Method | Coil springs + drop brackets |
| Rear Lift Method | Fabricated steel blocks |
| Track Bar | Relocation bracket included |
| Radius Arms | Drop brackets included |
| Max Tire Size | 37" tall on 9" wide wheels |
| Recommended Wheels | 17"+ x 9" wide, +18 to +25 offset |
| Installation Type | 100% Bolt-On |
| Country of Origin | Made in USA |
WHAT'S INCLUDED:
Complete Kit Components:
- (2) Falcon 1.1 Monotube front shocks
- (2) Falcon 1.1 Monotube rear shocks
- (2) Front coil springs
- Rear fabricated steel lift blocks
- Track bar relocation bracket
- Radius arm drop brackets (pair)
- Brake line extension brackets (model-specific)
- Bump stop extension brackets
- Front sway bar frame mount extension brackets
- All mounting hardware
- Detailed installation instructions