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Fabtech K1159M 6″ RTS® Lift Kit With Stealth Shocks

2020-2024 Chevrolet Silverado 2500 HD 2WD/4WD Diesel 2020-2024 GMC Sierra 2500 HD 2WD/4WD Diesel
Fabtech K1159M 6″ RTS® Lift Kit With Stealth Shocks
2986.33In stock
2020-2024 Chevrolet Silverado 2500 HD 2WD/4WD Diesel 2020-2024 GMC Sierra 2500 HD 2WD/4WD Diesel

Lift Kit

  • Brand : Fabtech
  • SKU : BKBNK1159M
  • Part Number : K1159M
4.9257075471698 848 5
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$2,986.33
$2,986.33
10+ In Stock

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Product Details

This high-quality 6″ lift kit for the 2020–2024 Chevy Silverado 2500HD and GMC Sierra 2500HD (2WD/4WD) is engineered to enhance off-road performance while maintaining a smooth and controlled ride on the highway. Designed to retain the factory load-carrying capacity, it is an ideal choice for truck owners who frequently tow or haul heavy loads and require dependable on-road and off-road capability.

At the core of this system is Fabtech’s advanced RTS® design. This innovative bracket system keeps the torsion bars in their original factory location while lifting the vehicle. By preventing the torsion bars from hanging down, the system maintains superior ground clearance and protects the bars from becoming snagged or damaged during off-road use. This design also gives the truck a clean and uncluttered appearance.

The lift kit also includes heavy-duty lower control arm crossmembers that are arched for increased ground clearance. Integrated skid plating offers added protection for the front differential from rocks and trail obstacles. Constructed from 1/4″ thick steel, the crossmembers and supporting bracketry deliver outstanding strength and structural rigidity, ensuring long-lasting suspension performance.

The system is engineered for efficient installation, requiring only four drilled holes and no cutting of the front differential housing. This thoughtful design reduces install time while maintaining the integrity of factory components.

Built with premium materials and superior craftsmanship, this Fabtech lift kit is designed to provide years of trouble-free service while improving both ride quality and off-road capability.

CROSSMEMBERS

1/4″ thick steel lower control arm Crossmembers are arched for maximum ground clearance. The welded box design of these Crossmembers provides additional strength to the front suspension. Retains factory alignment cams for easy adjustment.

STEERING KNUCKLES

Fabtech’s extended length ductile iron Steering Knuckles provide zero bump steer throughout the suspension travel. This provides an enhanced driver experience compared to stock. Near stock track width keeps the tires under the fenders for a clean appearance.

TIE RODS

Oversized tie rods are provided to replace the stock units that are designed to handle oversized tires.

SKID PLATE

A heavy duty front differential Skid Plate is constructed of 1/4″ thick steel to protect the diff from offroad obstacles.

DIFFERENTIAL MOUNTS

Heavy duty Differential Mounts properly reposition the front diff for the precise CV and driveshaft angle to reduce driveline vibration at high speed.

SWAY BAR MOUNTS

Heavy duty mounts reposition the front sway bar for on road functionality and no bind for offroad use.

Front & REAR BUMP STOP SPACERS

Steel brackets relocate the 4 front and 2 rear compression stops to align with the factory closed cell bump stops to control the travel and eliminate over cycling of the suspension.

REAR LIFT BLOCKS

3″ tall rear lift blocks replace the factory blocks for additional lift without changing the ride quality or load carrying capacity. This block height helps level the truck front to rear.

REAR U-BOLTS

U-Bolts designed to attach the entire rear differential to the vehicle. A critical part that demands the best quality for your vehicle.

Stealth Shocks

These extended length monotube shocks have a Nitrocarb piston rod for corrosion resistance and resist rock chipping. Great highway ride with good offroad damping capacity.

When you're ready to run 37" tires on your Raptor and have the ultimate shock system to go with it then this is the kit for you. The lift features heavy duty ductile iron steering knuckles designed to handle 37" tall ti

Lift Kit; 6 in. Lift; w/Stealth Shocks; For PN[FTS21277/FTS21278/FTS21279/FTS6358/FTS6240];;

Lift Kit
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Fitment

YearsMakeModelDriveEngine
2020-2024ChevroletSilverado 2500 HD2WDDiesel
2020-2024ChevroletSilverado 2500 HD4WDDiesel
2020-2024GMCSierra 2500 HD2WDDiesel
2020-2024GMCSierra 2500 HD4WDDiesel

Features

  • Keeps torsion bars in the factory frame location to maximize ground clearance
  • RTS® torsion bar brackets maintain factory bar indexing for a smooth, comfortable ride
  • Heavy-duty 1/4″ thick steel bracketry increases suspension strength and durability
  • Near-factory track width helps keep tires properly positioned under the fenders
  • Front and rear bump stop brackets prevent suspension over-cycling for component protection
  • Optional Uniball Upper Control Arms available for enhanced performance

Components

  • 1 × FTS21277 – Component Box 1
  • 1 × FTS21278 – Component Box 2
  • 1 × FTS21279 – Component Box 3
  • 2 × FTS6358 – Front Stealth Shocks
  • 2 × FTS6240 – Rear Stealth Shocks

STEALTH MONOTUBE SHOCK

Stealth is the first all black monotube shock absorber, with an identifiable raised metal nameplate, that represents the signature of quality you can rely on for a superior ride at an affordable price.

Stealth monotube shocks are built with a 46mm diameter high flow piston and vehicle specific valving, for a great ride with oversized tires.

All Stealth shock absorbers feature Nitrocarburized piston rods that are superior to chromed rods in durability and corrosion resistance. These Nitrocarb piston rods are finished in matte black for a complete black out shock package.

  • 50mm OD Seamless Steel Body
  • 46mm High Flow Piston for best ride
  • Vehicle specific valving designed for oversized tires
  • Full floating piston separates gas from oil for a consistent ride
  • 14mm Nitrocarb piston rod resists rock chips and rusting
  • All black finish with raised nameplate as a signature of quality

Quick Specs

  • Tire Size – 37/12.50R18 Wheel Size – 18×9 w/ 5 3/4in BS w/minor trimming
  • Tire Size – 37/12.50R20 Wheel Size – 20×9 w/ 5 3/4in BS w/minor trimming
  • Tire Size – 37/12.50R22 Wheel Size – 22×9 w/ 5 3/4in BS w/minor trimming
  • Part Number : K1159M

Important Notes

  • California Prop 65 Warning
  • 14. Can not use OEM wheel and tire.
  • 20. Does not fit standard cab models.
  • 167. Diesel models only.

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