Pro Comp K1085B 6" Lift Knuckle System Kit w/ES Shocks

Pro Comp K1085B 6
1842.99In stock
  • Brand: Pro Comp
  • |
  • SKU: PC-K1085B
  • |
  • Part Number: K1085B

2011-2019 Chevrolet Silverado 2500 HD/3500 HD 2WD/4WD Gas/Diesel/2011-2019 GMC Sierra 2500 HD 2WD/4WD Gas/Diesel

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Product Details

The latest GM 2500HD truck has raised the bar for what a heavy duty truck really is. It weighs nearly 7500 lbs., it’s available with a 397 horsepower, 765 lb-ft of torque diesel engine and can tow nearly 18,000 lbs! With all of the improvements made to the HD, the engineering team at Pro Comp has built their best suspension system possible to keep pace with these heavy haulers. Pro Comp’s HD suspension utilizes innovative features that enhance the strength and integrity of the suspension and allow it to be installed as a complete bolt on system. There are no holes to drill, no welding, no trimming of the front differential and no driveline modifications. This system can be installed in as little as 5.5 hours*.

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2011-2019ChevroletSilverado 2500 HD2WD/4WDGas
2011-2019ChevroletSilverado 2500 HD2WD/4WDDiesel
2011-2019ChevroletSilverado 3500 HD2WD/4WDGas
2011-2019ChevroletSilverado 3500 HD2WD/4WDDiesel
2011-2019GMCSierra 2500 HD2WD/4WDGas
2011-2019GMCSierra 2500 HD2WD/4WDDiesel


  • Lift Height: 6" front, 3.5" rear
  • Front Lift: Crossmembers & 4wd Steering Knuckles
  • Steering Correction: None
  • Rear Lift: Lift Blocks & U-Bolts
  • Includes: Driveline Spacers, Bump Stop Extensions, Skid Plate & More


151893B-1Kit Box
151893B-2Kit Box
151893B-3Kit Box
151893B-4Front / Rear ES3000 Shocks & ES2000 Steering Stabilizer

Important Notes

  • Driveline Modifications may be required due to increase driveline angles
  • Not recommended for 98-99 GM2500 4WD vehicles with Auto Track NP246 transfer case.
  • Rear Add-A-Leaf 51088B-5 can be used to increase the rear lift height of 51893B / 51894B by 1.5".
  • Vehicles will require alignment after kit is installed.

Tire Info
Max Tire Size35" x 12.50"
Wheel Diameter16" +
Wheel Width8" - 10"
Backspace4" - 5"
Bolt Pattern8 x 6.5"
Bolt Code82
Lug Nut Size14mm x 1.5
Lug Nut KitPXA26145