Upgrade your Silverado/Sierra 2500/3500 with a premium lift kit engineered to deliver increased ground clearance, improved suspension performance, and dependable durability both on and off road. Designed for 2WD and 4WD applications, this complete system combines high-quality Cognito components with race-proven Fox shocks to provide outstanding performance, ride quality, and long-term reliability without the guesswork. Proudly engineered, manufactured, and assembled in the USA, Cognito components are built to handle the demands of daily driving, towing, and aggressive off-road use while maintaining excellent comfort and drivability.

At the heart of this system is the Cognito Non-Torsion Bar Drop Front Lift Kit, specifically engineered to maximize ground clearance by keeping the torsion bars tucked within the factory frame location instead of lowering them below the chassis. This design helps maintain proper CV axle angles, superior ride quality, and improved underbody clearance for enhanced off-road capability and overall suspension performance. The included Cognito Billet Upper Control Arms are precision-machined from premium 6061 aluminum and finished in a durable black anodized coating for exceptional strength, corrosion resistance, and long-term durability.

Their lightweight yet heavy-duty construction improves suspension geometry and provides increased droop travel, making them some of the strongest upper control arms Cognito has developed to date. Every kit includes all required hardware and QR code linking to detailed installation instructions to ensure a smooth and efficient installation process. To further improve steering system reliability, the included Cognito Pitman and Idler Arm Support Kit (PISK) addresses common weaknesses found in factory GM steering systems.

Utilizing Cognito's patented design, the PISK reinforces the pitman and idler arms to help eliminate unwanted center-link movement while improving steering precision, stability, and overall component longevity. This kit is paired with Fox 2.0 Performance Series Remote Reservoir shocks, delivering industry-leading, race-proven performance in a direct bolt-on package. The external reservoirs increase oil and nitrogen capacity to help maintain consistent damping performance under demanding conditions while also adding a clean, aggressive appearance.

Inside each Fox shock, a race-developed high-flow damping piston combined with application-specific valving delivers predictable ride quality, improved handling, and confident control across rough roads, towing conditions, and off-road terrain. The result is a complete suspension system designed to enhance the appearance, capability, and performance of your truck while maintaining everyday comfort and drivability.

Features and Benefits:

• Yields 4-inches of front lift, 2-inches of rear lift for a level stance
• Cognito Billet Upper Control Arm Kit
• Cognito Pitman and Idler Arm Support Kit
• Fox 2.0 Performance Series Remote Reservoir Shocks
• Maintains adequate droop travel to optimize ride quality
• PISK improves drivability, fuel economy, and tire wear
• 14-hour DIY install time
• Made in the USA

Details:

• Position: Front and Rear
• Grade Type: Performance
• Mounting Hardware Included: Yes
• Shocks Included: Yes
• Adjustable Control Arm: Yes
• Bushings Included: Yes
• Installation Time: 14 Hour
• Leaf Spring Bracket Color: Black
• Maximum Lift: 4 Inch
• Maximum Lift Height Front: 4 Inch
• Maximum Lift Height Rear: 2 Inch
• Fitment Summary: 2020-2026 Chevrolet/GMC Silverado/Sierra 2500 HD, 2020-2026 Chevrolet/GMC Silverado/Sierra 3500 HD
• Make: Chevrolet, GMC
• Application Summary: Cognito 4-Inch Performance Billet UCA Lift Kit w/Fox PSRR 2.0 Shocks, 20-26 GM 2500/3500
• 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:

• 110-70122 (1) 4 Inch Non-Torsion Drop Component Box for 2020 GM 2500HD / 3500H
• 110-90258 (1) .5 Inch Front Shock Extender Kit for 2011-2019 GM 2500HD / 3500H
• 110-70142 (1) 4 Inch Sub-Frame Component Box for 2020 GM 8-lug
• 210-90895 (2) Fox PSRR performance series remote reservoir front 2020 GM 2
• 110-90897 (1) 2 Inch Block and 17.5 Inch U-bolt Kit (cast/straight) for 2020-Prese
• 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.
• 110-91365 (1) Billet UCA Kit, 2020+ GM HD
• 110-70121 (1) 4 Inch Spindle Component Box for 2020 GM 2500HD / 3500HD 2WD/4WD
• 210-90215 (2) Fox 2.0 (PSRR) Single Rear Shock for 1-4 Inch lift height for 20