2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Exterior Upgrades

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Bed Liners

Bed Liners

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Bed Racks

Bed Racks

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Bull Bars

Bull Bars

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Bumpers

Bumpers

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Grilles & Grille Guards

Grilles & Grille Guards

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Mud Flaps

Mud Flaps

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Side Steps

Side Steps

2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Tonneau Covers

Tonneau Covers

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AMP Research 76400-01A Plug-n-Play Conversion Kit for PowerSteps | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
IN STOCK
AMP Research 76400-01A Plug-n-Play Conversion Kit for PowerSteps | 2014-2019 GM Silverado/Sierra 2500HD/3500HD

AMP Research

AMP Research 76400-01A Plug-n-Play Conversion Kit for PowerSteps | 2014-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: AMP76400-01A
$219.99
Rough Country 47119651B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 47119651B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 47119651B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 47119651B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 47119651B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 47119651B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed

Rough Country

Rough Country 47119651B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed

SKU: RCS47119651B
$699.95
Rough Country 47119551B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
IN STOCK
Rough Country 47119551B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 47119551B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 47119551B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 47119551B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 47119551B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed

Rough Country

Rough Country 47119551B Hard Low Profile Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed

SKU: RCS47119551B
$699.95
T-Rex 51211 Upper Class Mesh Grille | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex 51211 Upper Class Mesh Grille | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex 51211 Upper Class Mesh Grille | 2015-2019 GMC Sierra 2500HD/3500HD

T-Rex Grilles

T-Rex 51211 Upper Class Mesh Grille | 2015-2019 GMC Sierra 2500HD/3500HD

SKU: TRX51211
$944.50
T-Rex Z312111 ZROADZ Grille Insert w/20 LED Bar | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex Z312111 ZROADZ Grille Insert w/20 LED Bar | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex Z312111 ZROADZ Grille Insert w/20 LED Bar | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex Z312111 ZROADZ Grille Insert w/20 LED Bar | 2015-2019 GMC Sierra 2500HD/3500HD

T-Rex Grilles

T-Rex Z312111 ZROADZ Grille Insert w/20 LED Bar | 2015-2019 GMC Sierra 2500HD/3500HD

SKU: TRXZ312111
$850.50
T-Rex 6711231 X-Metal Grille | 2015-2017 GM Silverado 3500HD
T-Rex 6711231 X-Metal Grille | 2015-2017 GM Silverado 3500HD
T-Rex 6711231 X-Metal Grille | 2015-2017 GM Silverado 3500HD

T-Rex Grilles

T-Rex 6711231 X-Metal Grille | 2015-2017 GM Silverado 3500HD

SKU: TRX6711231
$989.50
T-Rex 52211 Upper Class Mesh Grille | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex 52211 Upper Class Mesh Grille | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex 52211 Upper Class Mesh Grille | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex 52211 Upper Class Mesh Grille | 2015-2019 GMC Sierra 2500HD/3500HD

T-Rex Grilles

T-Rex 52211 Upper Class Mesh Grille | 2015-2019 GMC Sierra 2500HD/3500HD

SKU: TRX52211
$407.50
T-Rex 51123 Upper Class Mesh Grille | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 51123 Upper Class Mesh Grille | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 51123 Upper Class Mesh Grille | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 51123 Upper Class Mesh Grille | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 51123 Upper Class Mesh Grille | 2015-2019 GM Silverado 2500HD/3500HD

T-Rex Grilles

T-Rex 51123 Upper Class Mesh Grille | 2015-2019 GM Silverado 2500HD/3500HD

SKU: TRX51123
$1,389.50
T-Rex 25211 Billet Bumper | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex 25211 Billet Bumper | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex 25211 Billet Bumper | 2015-2019 GMC Sierra 2500HD/3500HD

T-Rex Grilles

T-Rex 25211 Billet Bumper | 2015-2019 GMC Sierra 2500HD/3500HD

SKU: TRX25211
$137.14
T-Rex 21122 Horizontal Billet Grille | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 21122 Horizontal Billet Grille | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 21122 Horizontal Billet Grille | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 21122 Horizontal Billet Grille | 2015-2019 GM Silverado 2500HD/3500HD

T-Rex Grilles

T-Rex 21122 Horizontal Billet Grille | 2015-2019 GM Silverado 2500HD/3500HD

SKU: TRX21122
$388.57
T-Rex 20211 Horizontal Billet Grille | 2015-2019 Sierra 2500HD/3500HD
T-Rex 20211 Horizontal Billet Grille | 2015-2019 Sierra 2500HD/3500HD
T-Rex 20211 Horizontal Billet Grille | 2015-2019 Sierra 2500HD/3500HD

T-Rex Grilles

T-Rex 20211 Horizontal Billet Grille | 2015-2019 Sierra 2500HD/3500HD

SKU: TRX20211
$600
Rough Country 10779 LED Rear Bumper | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
Rough Country 10779 LED Rear Bumper | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
Rough Country 10779 LED Rear Bumper | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
Rough Country 10779 LED Rear Bumper | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
Rough Country 10779 LED Rear Bumper | 2011-2019 GM Silverado/Sierra 2500HD/3500HD

Rough Country

Rough Country 10779 LED Rear Bumper | 2011-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: RCS10779
$749.95
Westin 57-93785 HDX Win Mount Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD
IN STOCK
Westin 57-93785 HDX Win Mount Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD
Westin 57-93785 HDX Win Mount Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD

Westin

Westin 57-93785 HDX Win Mount Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD

SKU: WES57-93785
$1,621.99
Westin 57-3795 HDX Black Steel Grille Guard | 2015-2019 GMC Sierra 2500HD/3500HD
IN STOCK
Westin 57-3795 HDX Black Steel Grille Guard | 2015-2019 GMC Sierra 2500HD/3500HD
Westin 57-3795 HDX Black Steel Grille Guard | 2015-2019 GMC Sierra 2500HD/3500HD

Westin

Westin 57-3795 HDX Black Steel Grille Guard | 2015-2019 GMC Sierra 2500HD/3500HD

SKU: WES57-3795
$1,146.99
Westin 57-3790 HDX Stainless Steel Grille Guard | 2015-2019 GMC Sierra 2500HD/3500HD
Westin 57-3790 HDX Stainless Steel Grille Guard | 2015-2019 GMC Sierra 2500HD/3500HD
Westin 57-3790 HDX Stainless Steel Grille Guard | 2015-2019 GMC Sierra 2500HD/3500HD

Westin

Westin 57-3790 HDX Stainless Steel Grille Guard | 2015-2019 GMC Sierra 2500HD/3500HD

SKU: WES57-3790
$2,006.99
Westin 57-3785 HDX Black Steel Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD
IN STOCK
Westin 57-3785 HDX Black Steel Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD
Westin 57-3785 HDX Black Steel Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD

Westin

Westin 57-3785 HDX Black Steel Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD

SKU: WES57-3785
$1,146.99
Westin 57-3780 HDX Stainless Steel Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD
Westin 57-3780 HDX Stainless Steel Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD
Westin 57-3780 HDX Stainless Steel Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD
Westin 57-3780 HDX Stainless Steel Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD
Westin 57-3780 HDX Stainless Steel Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD
Westin 57-3780 HDX Stainless Steel Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD

Westin

Westin 57-3780 HDX Stainless Steel Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD

SKU: WES57-3780
$2,006.99
Westin 40-3785 Sportsman Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD
Westin 40-3785 Sportsman Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD
Westin 40-3785 Sportsman Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD

Westin

Westin 40-3785 Sportsman Grille Guard | 2015-2019 GM Silverado 2500HD/3500HD

SKU: WES40-3785
$1,189.44
Westin 31-5630 E-Series Stainless Steel Bull Bar | 2015-2019 GM Silverado/Sierra 2500HD/3500HD
Westin 31-5630 E-Series Stainless Steel Bull Bar | 2015-2019 GM Silverado/Sierra 2500HD/3500HD
Westin 31-5630 E-Series Stainless Steel Bull Bar | 2015-2019 GM Silverado/Sierra 2500HD/3500HD
Westin 31-5630 E-Series Stainless Steel Bull Bar | 2015-2019 GM Silverado/Sierra 2500HD/3500HD

Westin

Westin 31-5630 E-Series Stainless Steel Bull Bar | 2015-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: WES31-5630
$642.64
BedRug TW2X4MAT TrackMat 2ft x 4ft Folding Utility Mat | Universal
BedRug TW2X4MAT TrackMat 2ft x 4ft Folding Utility Mat | Universal
BedRug TW2X4MAT TrackMat 2ft x 4ft Folding Utility Mat | Universal
BedRug TW2X4MAT TrackMat 2ft x 4ft Folding Utility Mat | Universal

BedRug

BedRug TW2X4MAT TrackMat 2ft x 4ft Folding Utility Mat | Universal

SKU: BEDTW2X4MAT
$34.63
B&W PUCP7541BA Cab Protector - Black | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
B&W PUCP7541BA Cab Protector - Black | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
B&W PUCP7541BA Cab Protector - Black | 2011-2019 GM Silverado/Sierra 2500HD/3500HD

B&W Trailer hitches

B&W PUCP7541BA Cab Protector - Black | 2011-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: BNWPUCP7541BA
$899
T-Rex 52122 Upper Class Mesh Bumper | 2015-2019 GM Silverado 2500HD
T-Rex 52122 Upper Class Mesh Bumper | 2015-2019 GM Silverado 2500HD
T-Rex 52122 Upper Class Mesh Bumper | 2015-2019 GM Silverado 2500HD

T-Rex Grilles

T-Rex 52122 Upper Class Mesh Bumper | 2015-2019 GM Silverado 2500HD

SKU: TRX52122
$239.50
T-Rex 25122 Billet Bumper | 2015-2019 GM Silverado 3500HD
T-Rex 25122 Billet Bumper | 2015-2019 GM Silverado 3500HD
T-Rex 25122 Billet Bumper | 2015-2019 GM Silverado 3500HD
T-Rex 25122 Billet Bumper | 2015-2019 GM Silverado 3500HD
T-Rex 25122 Billet Bumper | 2015-2019 GM Silverado 3500HD

T-Rex Grilles

T-Rex 25122 Billet Bumper | 2015-2019 GM Silverado 3500HD

SKU: TRX25122
$85.71
T-Rex 25122B Billet Bumper | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 25122B Billet Bumper | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 25122B Billet Bumper | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 25122B Billet Bumper | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 25122B Billet Bumper | 2015-2019 GM Silverado 2500HD/3500HD

T-Rex Grilles

T-Rex 25122B Billet Bumper | 2015-2019 GM Silverado 2500HD/3500HD

SKU: TRX25122B
$97.14

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DIESEL TRUCK EXPERTS STANDING BY

Your 2017-2019 GM 6.6L Duramax L5P already packs an aggressive and rugged look, but if you're looking to take it a step further, pick up some custom exterior upgrades from Alligator Performance! We offer a massive selection of premium exterior parts that not only enhance your GM 2500HD/3500HD’s style but also improve its functionality along the way. From aggressive side steps and fender flares to sleek grilles, mud flaps, and roof racks, we have everything you need to make your Sierra or Silverado stand out on the road or trail. And after you've picked up a few exterior accessories, add on some new Wheels and Tires to make statement around every corner. GM Duramax Fitments: 2017, 2018, 2019 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.

GM Duramax>2017-2019 6.6L L5P
Side Steps
Fender Flares
Grilles
Mud Flaps
Roof Racks

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