Pro Comp K1143B 6" Lift Kit 4" Rear Block

Pro Comp K1143B 6
1715.99In stock
  • Brand: Pro Comp
  • |
  • SKU: PC-K1143B/K1143BMX/K1143BP/K1143BPS/K1143BPX
  • |
  • Part Number: K1143B/K1143F/K1143BP/K1143BPS/K1143BPX
2007-2013 Chevrolet Silverado 1500 2WD Gas/2007-2013 GMC Sierra 1500 2WD Gas/2007-2013 Chevrolet Silverado 1500 4WD Gas/2007-2013 GMC Sierra 1500 4WD Gas
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Product Details

Pro Comp is driven by genuine off road enthusiasts. Pro Comp Suspension Products reflect customer-driven, racing influenced technology and engineering with a focus on world-class manufacturing processes and techniques. When it comes to your vehicle's handling, look and performance, we know you don't make compromises and neither do we. From the middle of downtown to the middle of nowhere, Pro Comp will get you there and back.

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2007-2013ChevroletSilverado 15002WDGas
2007-2013GMCSierra 15002WDGas
2007-2013ChevroletSilverado 15004WDGas
2007-2013GMCSierra 15004WDGas


  • Fits 2007 to 2013 Silverado 1500 Non Auto Trac 2WD and 4WD
  • 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-Leaf Kit


151007B-1Kit Box
151007B-2Kit Box
151007B-3Kit Box
151007B-4Kit Box
151099B-5Kit Box
PLUS2Rear 2.0 IFP 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