Pro Comp K1144B 6" Lift Kit with Auto Trac 4" Rear Block

Pro Comp K1144B 6
2148.99In stock
  • Brand: Pro Comp
  • |
  • SKU: PC-K1144B/K1144BMX/K1144BP/K1144BPS/K1144BPX
  • |
  • Part Number: K1144B/K1144F/K1144BP/K1144BPS/K1144BPX
2007-2013 Chevrolet Silverado 1500 4WD Gas/2007-2013 GMC Sierra 1500 4WD Gas
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Product Details

Pro Comp's 6-inch performance suspension systems for the 07-13 GM1500 trucks are designed to maximize the handling and performance benefits of the GMT900 chassis. These lift systems are 100% compatible with the factory stability control system. Pro Comp is also the first aftermarket suspension manufacturer to successfully pass Federal Motor Vehicle Safety Standard Test 126 - Stability and avoidance maneuver testing. These precision engineered suspension systems feature heavy duty laser cut cross members, CNC machined knuckles, CV Front driveshaft, rear add a leafs, 4" rear lift blocks and top grade hardware for a complete package that accommodates 35" tall tires and allows smooth operation of 4x4 Hi range when needed. Stage I systems feature front strut spacers and offer the option of twin tube nitro gas charged ES9000 rear shocks, mono tube Pro Runner rear shocks or Pro Runner front struts* and Pro Runner rear shocks.

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2007-2013ChevroletSilverado 15004WDGas
2007-2013GMCSierra 15004WDGas


  • Lift Height: 6"
  • Front Lift: Strut Spacers
  • Front/Rear Crossmembers
  • Compression Struts
  • Spindles
  • Sway Bar Drop Brackets
  • Bump Stops
  • Brake Line Extension Brackets
  • Rear Lift: 4" Block/U-Bolt Kit w/Add-A-Leafs


151017B-1Kit Box
251007B-2Kit Box
151007B-3Kit Box
151007B-4Kit Box
151099B-5Kit Box
151246CV Front Drive shaft
2IFP 2.0 Fox Shocks

Important Notes

  • A replacement CV front driveshaft is recommended for extended high speed use in 4x4 high or AUTO 4x4. GM vehicles with selectable 4x4 high and Auto 4x activation (Auto Trac) can use p/n 51249 (measures
  • 37.81" from U-joint center to end of slip joint.) 2010 to current models with a 6spd automatic transmission or vehicles with All Wheel Drive will require p/n 51245 - (measures 36.81" from U-joint center to end of slip
  • joint.). The K1144 / 51017 includes p/n 51256 and required differential brackets.
  • 07-13 vehicles must use 17" or larger diameter rims.
  • Vehicle will require alignment after kit is installed.
  • Hubcentric rings are recommended for 99-13 GM 1500 vehicles.

Tire Info
Max Tire Size35" x 12.50"
Wheel Diameter17" +
Wheel Width8" - 9.5"
Backspace4.5" - 5"
Bolt Pattern6 x 5.5"
Bolt Code83
Lug Nut Size14mm x 1.5
Lug Nut KitPXA26144