This Fabtech K1136 / K1136M 4 inch lift kit for the GMC Sierra 1500 AT4 adds to the factory 2 inch lift for clearance to fit up to 35 inch tires.  This kit features all required components like heavy duty 1/4″ thick steel crossmembers that use OE style alignment cam pins that utilize the factory cams for easy adjustment. Triple front diff mounts reposition the differential for vibration free operation at high speed. The near stock track width keeps the tires under the fenders for a clean appearance. Fabtech’s proprietary steering knuckle geometry provides excellent lock to lock turning radius to maneuver in tight spots. The factory Trail Boss and AT4 coilover shocks are retained and relocated from the bottom to allow for full steer while achieving 4″ of lift.

Rear lift is accomplished by removing the factory 2″ block and replacing it with a 5″ block and u-bolt system.

Top Features and Benefits

• Allows use of 35 inch tires
• 4" lift kit works with AT4 factory 2 inch lift kit (total of 6 inches)
• Choose from Fabtech Performance shocks or Stealth monotube shocks
• Heavy duty high arched crossmembers for better ground clearance
• Ductile iron steering knuckles
• Rear blocks and ubolts
• Heavy duty front differential skid plate
• Limited Lifetime Warranty

Recommended Tires and Wheels

• Tire Size - 35/12.50R18 Wheel Size - 18x9 w/ 5" BS w/ minor tirmming
• Tire Size - 295/70R18 Wheel Size - 18x9 w/ 5" BS w/ minor trimming
• Tire Size - 35/1250R20 Wheel Size - 20x9 w/ 5" BS w/ minor trimming
• Tire Size - 295/65R20 Wheel Size - 20x9 w/ 5" BS w/ minor trimming