We have bundled everything you need in a lift kit for your Silverado/Sierra 2500/3500 2WD/4WD with high quality Cognito components. There is no guesswork. Cognito components are engineered, manufactured and assembled in the USA.

The Cognito Non-Torsion Bar Drop Front Lift kit is designed and engineered to offer superior ride quality and corrected CV joint angles. The Cognito Ball Joint SM Series Upper Control Arms add style, function and performance to your vehicle by correcting the Ball Joint angle for lifted and leveled applications and improving the allowable droop travel for a better ride quality. The control arm kit features boxed sheet metal arms that are welded, and Powdercoat semi-gloss black.

Pre-installed maintenance free ball joints and pivot bushings are included. The Cognito Pitman and Idler Arm Support Kit: Pitman and Idler arms have been an inherent wear problem within the steering systems of Chevy and GMC trucks and SUVs for decades. The Cognito PISK (Pitman and Idler Arm Support Kit) replace the problem components that plague factory and aftermarket steering systems on several models and years of GM trucks and SUVs.

These improvements are accomplished through application of Cognito's innovative, patented design, by providing additional support to the vehicle's pitman and idler arms, which eliminate the forward and rearward movement of the center-link. This kit is paired with Cognito 2.0 Remote Reservoir Aluminum shocks, engineered specifically for GM HD trucks to deliver exceptional ride quality, control, and durability in a direct bolt-on package. The external reservoirs increase oil capacity and improve heat dissipation to help maintain consistent damping performance under demanding conditions while adding a clean, aggressive appearance.

Eliminates oil aeration allowing maximum performance from the factory-tuned, precision valving. They're easy to install and provide a comfortable on-road ride and predictable off-road handling in even the toughest conditions. The Cognito 2 Inch Block and U-Bolt Kit includes 2 Inch tall Powdercoat semi-gloss black cast steel blocks and heavy-duty zinc plated U-bolts.

Features and Benefits:

• Yields 4-inches of front lift
• Cognito Block and U-Bolt Kit yields 2-inches of rear lift
• SM Series Ball Joint Upper Control Arms
• Patented Pitman and Idler Arm Support Kit
• Cognito 2.0 Remote Reservoir Shocks
• Maintains Adequate Droop Travel for Superior Ride Quality
• 13-hour DIY install time
• Made In USA

Details:

• Position: Front and Rear
• Grade Type: Performance
• Mounting Hardware Included: Yes
• Shocks Included: Yes
• Adjustable Control Arm: No
• Bushings Included: Yes
• Installation Time: 13 Hour
• Leaf Spring Bracket Color: Black
• Maximum Lift: 4 Inch
• Maximum Lift Height Front: 4 Inch
• Maximum Lift Height Rear: 2 Inch
• Leaf Spring Bracket Material: Cast Iron
• Fitment Summary: 2020-2026 Chevrolet/GMC Silverado/Sierra 2500 HD, 2020-2026 Chevrolet/GMC Silverado/Sierra 3500 HD
• Make: Chevrolet, GMC
• Application Summary: Cognito 4in Performance Lift Kit w/Cognito 2.0 RR & SM UCA 20-26 2500/3500HD
• Fitment Notes: Use Up To 35 Inch x 12.50 Inch Tires, Up to 37x12.50 Inch Tire with Minor Fender Trimming, Requires Recalibration of Advanced Driver Assistance Systems (ADAS) After Install, Raises Front 4 Inch, Raises Rear 2 Inch, 18 mm Offset Aftermarket Wheels Recommended

Kit Components:

• 110-70121 (1) 4 Inch Spindle Component Box for 2020 GM 2500HD / 3500HD 2WD/4WD
• 80001 (1) 2020 GM 2500/3500 Passenger Balljoint UCA Assembly
• 80000 (1) 2020 GM 2500/3500 Driver Balljoint UCA Assembly
• 110-70142 (1) 4 Inch Sub-Frame Component Box for 2020 GM 8-lug
• 110-91373 (1) GM HD 2.0 Inch RR Front 4 Inch Lift Driver Single
• 110-90897 (1) 2 Inch Block and 17.5 Inch U-bolt Kit (cast/straight) for 2020-Prese
• 110-91374 (1) GM HD 2.0 Inch RR Front 4 Inch Lift Passenger Single
• 110-70122 (1) 4 Inch Non-Torsion Drop Component Box for 2020 GM 2500HD / 3500H
• 110-90772 (1) Pitman and Idler Arm Support Kit for 2011-2022 GM 2500HD / 3
• 110-70123 (1) 4 Inch 4WD Component Box for 2020 GM 2500HD / 3500HD 4WD trucks.
• 110-91375 (1) GM HD 2.0 Inch RR Rear 4 Inch Lift Driver Single
• 110-91376 (1) GM HD 2.0 Inch RR Rear 4 Inch Lift Passenger Single