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Fab Fours GR3900-1 GMC Sierra 1500 2019-2021 Grumper Front Bumper

SKU GR3900-1

FITMENT CONFIRMED

CONFIRMED FIT FOR

NOT A MATCH

WILL NOT FIT

SHOW BUMPERS FOR YOUR TRUCK

Not vehicle specific

Universal fit

CONFIRM IT FITS YOUR TRUCK

Sale price $3,809.99 Regular price $4,747.76 SAVE $937.77

Bolt-on install using factory bolt locations

Grille and bumper in one piece

11-gauge steel · 250 lbs · Black powder coat

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Product details

Full specifications

Style
Fab Fours Front Bumper Grumper
Vehicle Fit
2019-2021 GMC Sierra
Fitment Notes
Not Compatible with Diesel Models
Weight
125 lbs
Dimensions (L x W x H)
88 x 42 x 26 in
Steel Material
11 GA US Steel Construction & 3/16″ Steel Winch Mount
Finish
Fab Fours 2 Stage Black Powder Coat

Front bumper

x1

Mounting hardware kit

x1

Install instructions

x1

3-5

HOURS

2

PEOPLE

Bolt-on

METHOD

No guessing. The mounting hardware's in the box, and it lines up on your truck's factory mounts. It ships freight and it's heavy, so clear a spot for it.

Download installation PDF
"Bolted up clean. Sensors and fogs plugged right back in." — Caleb Haymes, verified buyer

Fab Fours stands behind every build with a lifetime warranty on structure and manufacturer defects, plus rust protection on coated finishes (bare steel is not covered). Coverage runs for the original purchaser under normal and intended use.
Read full Fab Fours warranty terms

Covered by the Magnuson-Moss Warranty Act. Buying from an authorized dealer keeps your full coverage intact.

Fab Fours Grumper GR3900-1

Features:

    • Aggressive Design
    • Combines both Grille and Bumper
    • Winch ready for Warn Zeon 12 or Lower
    • 9 removable inserts for optimal customization
    • Side mounting slots accommodates (2) 3×3 cubes (lights not included).
    • Provides far more tire clearance.
    • Lower cutout for increased airflow.
    • Integrated Sensor Holes
    • Does not accommodate factory camera

      Fab Fours Grumper

      The Fab Fours Grumper replaces the factory grille and the factory front bumper with one welded piece of 11-gauge steel. The line started on the Jeep Wrangler and now spans the full-size Chevy, GMC, Ram, and Ford trucks and the Bronco. Every version is winch-ready, with removable inserts you can pull and paint to match the truck. One steel face in place of the plastic nose, bolted straight to the frame.

      Fab Fours GR3900-1 GMC Sierra 1500 2019-2021 Grumper Front Bumper

      ABOUT THE GRUMPER SERIES

      GRILLE AND BUMPER.
      IN ONE STEEL UNIT.

      The Grumper is the one Fab Fours front bumper that replaces your grille too, a single steel unit in place of both your OEM grille and bumper. It is built from heavy US steel and comes winch-ready, with removable inserts that let you reshape the grille and light openings without buying a new bumper. The aggressive face reworks the whole front of the truck and clears bigger tires. Finished in 2-stage black powder coat. Designed and welded in Lancaster, South Carolina.

      GRILLE AND BUMPER, ONE UNIT

      Replaces both your OEM grille and bumper

      WINCH-READY

      Winch mount built into the bumper

      REMOVABLE INSERTS

      Reshape the grille and light openings your way

      HEAVY US STEEL

      2-stage black powder coat, welded in Lancaster, SC

      Fab Fours Grumper GR3900-1

      Features:

        • Aggressive Design
        • Combines both Grille and Bumper
        • Winch ready for Warn Zeon 12 or Lower
        • 9 removable inserts for optimal customization
        • Side mounting slots accommodates (2) 3×3 cubes (lights not included).
        • Provides far more tire clearance.
        • Lower cutout for increased airflow.
        • Integrated Sensor Holes
        • Does not accommodate factory camera

          Fab Fours Grumper

          The Fab Fours Grumper replaces the factory grille and the factory front bumper with one welded piece of 11-gauge steel. The line started on the Jeep Wrangler and now spans the full-size Chevy, GMC, Ram, and Ford trucks and the Bronco. Every version is winch-ready, with removable inserts you can pull and paint to match the truck. One steel face in place of the plastic nose, bolted straight to the frame.

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