2011-2019 GM HD Front 2.25" Leveling Kit Heavy-Duty Fabricated Control Arms (66-3012)
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2011-2019 GM HD Front 2.25" Leveling Kit Heavy-Duty Fabricated Control Arms (66-3012)
ReadyLIFT offers its popular forged torsion key leveling kit combined with all-new heavy-duty fabricated steel upper control arms for the 2011-2019 GM 2500/3500 HD trucks. This time-tested leveling key system is the strongest and safest option on the market for this platform. By combining the leveling kit with ultra-strong fabricated boxed upper control arms featuring 1-ton ball joints, this system provides an excellent leveling solution. The Extreme-Duty Upper Control Arms utilize laser-cut and CNC bent 4130 chromoly plate steel construction, and are engineered for trucks with 0 to 8 inches of lift.
Features
- Includes Forged Torsion Key Leveling Kit and shock extension spacers.
- Includes all-new Heavy-Duty Fabricated Steel Upper Control Arms.
- Upper Control Arms use tab and slot boxed 4130 chromoly plate steel for strength.
- Features 1-ton spring loaded HD series ball joints for long-lasting durability.
- Correct ball joint pivot angle for leveled applications.
- New TCT (Terrain Control Technology) pivots are maintenance-free and self-lubricating.
- Includes a CNC machined billet aluminum cap to protect the ball joint from road debris.
Notes
- Lift height must not exceed 26.25 inches (4WD) or 27 inches (2WD) when measured from the center of the wheel to the fender lip to prevent over-lifting and poor ride quality.
- Alignment, headlamp aiming, and potential ADAS (Advanced Driver Assistance Systems) recalibration are required after installation and may incur additional costs.
Compatibility Notes
- This kit can be used on GM 2500/3500 HD trucks with 0 to 8 inches of front lift.
- The kit is compatible with MagneRide systems, but may require recalibration.
- Installation requires a Torsion Bar Key Unloading Tool.
- Tire specifications and dimensions vary by manufacturer; every tire and wheel combination should be test fitted prior to installation.
Specs
- Max Front Lift: 2.25 inches
- Max Tire Diameter: 33 inches
- Upper Control Arms are designed for 0 to 8 inches of front lift.
- Upper Control Arms feature a Tough Anthracite Gray powder coat finish.
Vehicle Fitment
Vehicle Fitment
Part Specifications
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Part No.66-3012
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Cross Reference #804879609902
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VendorReadyLift
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Shipping Weight35.0 lb
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Length
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Width
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Height
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Placement
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Prop 65⚠️ Warning: Cancer & Reproductive Harm
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Compatibility Notes

