Fits: 2011 thru 2019 Chevy Silverado/GMC Sierra 2500HD/3500HD LML/L5P Duramax Diesel

Cognito 4-Inch Standard Lift Kit for 11-19 Silverado/Sierra 2500/3500 2WD/4WD. We have selected all the parts you'll need to lift your GM 2500HD/3500HD 4 Inches with high quality Cognito components and Fox performance shocks. At the core of this lift package is our performance proven Cognito Front Suspension Lift Kit featuring an integrated skid plate that ties the front and rear cross members together for unmatched front-end rigidity. The kit includes custom fabricated spindles and all bracketry required for installation as well as 1 inch fabricated rear blocks and new U Bolts for the rear. These parts are hand built here in the USA and finished with a durable semi-gloss black powder coating. The Fox 2.0 Performance Series Monotube Shocks are perfectly matched to give a comfortable on-road ride and predictable off-road handling in even the toughest of conditions.

Features:

• Yields 4-inches of front lift
• Cognito Block and U-Bolt Kit yields 1-inch of rear lift
• Fox 2.0 Performance Series Monotube Front Shocks
• Fox 2.0 Performance Series Monotube Rear Shocks
  
• Allows for up to a 35x12.5 Tire on a 9-Inch Wide Wheel 5.75-Inch Backspacing
• Cognito Decal Pack
  

Notes:

• The installation of a CV style front driveline will be required in order to safely operate the vehicle in 4WD over 20 mph, which is required to minimize driveline vibration that can lead to damaging the transfer case and/or differential. The Cognito Shift Linkage Bracket is included with the driveline.

Requirements:

• Maximum wheel backspacing is 5”
• Do not use a tire that is more than 4 1/2” wider than the rim width on a 4 3/4” or more backspaced wheel
• Factory 20” wheels will fit with this lift kit, factory 17” and 18” wheels will NOT fit
• Set at 4 to 5” ,suggested tire size is 33” tall and up to 12.5” wide on an 8 to 9” wide rim with 4.25 to 5.0” back spacing
• Set at 5 to 6”, suggested tire size is 34.5” tall and up to 12.4” wide on an 8 to 8.5” wide rim with 5.0” to 5.5” back spacing
• Call Cognito Motorsports with wheel and tire suggestions if necessary
• Trimming of inner fender well and bottom rear of steel fender may be required

Notes: 

• Free Standard freight is only to the lower 48 states. International, HI, and AK, orders will require an additional shipping charge before order is shipped.

• Cognito Warranty Registration