2011-2016 GM 2500HD/3500HD 6.6L LM Duramax Exterior Upgrades

2011-2016 6.6L Silverado & Sierra 2500HD/3500HD

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Bed Liners

Bed Liners

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Bed Racks

Bed Racks

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Bull Bars

Bull Bars

2011-2016 GM 2500HD/3500HD 6.6L LM Duramax Bumpers

Bumpers

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Fender Flares

Fender Flares

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Grilles & Grille Guards

Grilles & Grille Guards

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Mud Flaps

Mud Flaps

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Roof Racks

Roof Racks

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Side Steps

Side Steps

2011-2016 GM 2500HD/3500HD 6.6L LM Duramax Tonneau Covers

Tonneau Covers

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

Westin

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

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

Westin

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

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

Westin

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

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

Westin

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

SKU: WES57-3780
$2,006.99
Westin 57-3665 HDX Black Steel Grille Guard | 2011-2014 Sierra 2500HD/3500HD
Westin 57-3665 HDX Black Steel Grille Guard | 2011-2014 Sierra 2500HD/3500HD
Westin 57-3665 HDX Black Steel Grille Guard | 2011-2014 Sierra 2500HD/3500HD
Westin 57-3665 HDX Black Steel Grille Guard | 2011-2014 Sierra 2500HD/3500HD
Westin 57-3665 HDX Black Steel Grille Guard | 2011-2014 Sierra 2500HD/3500HD

Westin

Westin 57-3665 HDX Black Steel Grille Guard | 2011-2014 Sierra 2500HD/3500HD

SKU: WES57-3665
$1,146.99
Westin 57-3615 HDX Modular Black Steel Grille Guard | 2011-2014 Silverado 2500HD
Westin 57-3615 HDX Modular Black Steel Grille Guard | 2011-2014 Silverado 2500HD
Westin 57-3615 HDX Modular Black Steel Grille Guard | 2011-2014 Silverado 2500HD
Westin 57-3615 HDX Modular Black Steel Grille Guard | 2011-2014 Silverado 2500HD

Westin

Westin 57-3615 HDX Modular Black Steel Grille Guard | 2011-2014 Silverado 2500HD

SKU: WES57-3615
$1,146.99
Westin 57-3610 HDX Modular Stainless Steel Grille Guard | 2011-2014 Silverado 2500HD
Westin 57-3610 HDX Modular Stainless Steel Grille Guard | 2011-2014 Silverado 2500HD
Westin 57-3610 HDX Modular Stainless Steel Grille Guard | 2011-2014 Silverado 2500HD
Westin 57-3610 HDX Modular Stainless Steel Grille Guard | 2011-2014 Silverado 2500HD

Westin

Westin 57-3610 HDX Modular Stainless Steel Grille Guard | 2011-2014 Silverado 2500HD

SKU: WES57-3610
$2,006.99
Westin 40-3785 Sportsman Grille Guard | 2015-2019 Silverado 2500HD/3500HD
Westin 40-3785 Sportsman Grille Guard | 2015-2019 Silverado 2500HD/3500HD

Westin

Westin 40-3785 Sportsman Grille Guard | 2015-2019 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

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

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 Trailer hitches

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

SKU: BNWPUCP7541BA
$899
B&W PUCP7541WA Cab Protector - White | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
B&W PUCP7541WA Cab Protector - White | 2011-2019 GM Silverado/Sierra 2500HD/3500HD

B&W Trailer hitches

B&W PUCP7541WA Cab Protector - White | 2011-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: BNWPUCP7541WA
$899
T-Rex 52122 Upper Class Mesh Bumper | 2015-2019 Silverado 2500HD
T-Rex 52122 Upper Class Mesh Bumper | 2015-2019 Silverado 2500HD
T-Rex 52122 Upper Class Mesh Bumper | 2015-2019 Silverado 2500HD

T-Rex Grilles

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

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

T-Rex Grilles

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

SKU: TRX25122
$59.50
T-Rex 25122B Billet Bumper | 2015-2017 Silverado 3500HD
T-Rex 25122B Billet Bumper | 2015-2017 Silverado 3500HD
T-Rex 25122B Billet Bumper | 2015-2017 Silverado 3500HD

T-Rex Grilles

T-Rex 25122B Billet Bumper | 2015-2017 Silverado 3500HD

SKU: TRX25122B
$59.50
BAK Industries 80102 Revolver X4s Hard Rolling Cover | 1988-2014 GM Silverado/Sierra 1500/2500HD/3500HD Long Bed
BAK Industries 80102 Revolver X4s Hard Rolling Cover | 1988-2014 GM Silverado/Sierra 1500/2500HD/3500HD Long Bed

BAK Industries

BAK Industries 80102 Revolver X4s Hard Rolling Cover | 1988-2014 GM Silverado/Sierra 1500/2500HD/3500HD Long Bed

SKU: BAK80102
$1,549.99
BAK Industries 80101 Revolver X4s Hard Rolling Cover | 1988-2014 GM Silverado/Sierra 1500/2500HD/3500HD Short Bed
BAK Industries 80101 Revolver X4s Hard Rolling Cover | 1988-2014 GM Silverado/Sierra 1500/2500HD/3500HD Short Bed
BAK Industries 80101 Revolver X4s Hard Rolling Cover | 1988-2014 GM Silverado/Sierra 1500/2500HD/3500HD Short Bed
BAK Industries 80101 Revolver X4s Hard Rolling Cover | 1988-2014 GM Silverado/Sierra 1500/2500HD/3500HD Short Bed
BAK Industries 80101 Revolver X4s Hard Rolling Cover | 1988-2014 GM Silverado/Sierra 1500/2500HD/3500HD Short Bed

BAK Industries

BAK Industries 80101 Revolver X4s Hard Rolling Cover | 1988-2014 GM Silverado/Sierra 1500/2500HD/3500HD Short Bed

SKU: BAK80101
$1,479.99
Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD

Front Runner

Front Runner KRCS006T Retrax 5.7ft Slimline II Load Bed Rack Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD

SKU: FROKRCS006T
$1,725
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD

Front Runner

Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 2500HD/3500HD

SKU: FROKRCS007T
$1,957
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD

Front Runner

Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 2500HD/3500HD

SKU: FROKRCS008
$684
Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD
Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD
Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD
Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD
Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD
Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD

Front Runner

Front Runner KRCS001T Slimline II Load Bed Rack Kit | 1987-2025 GM Chevrolet Silverado 2500HD/3500HD

SKU: FROKRCS001T
$1,352
BedRug BMC07TG Tailgate Mat | 2007-2014 GM Silverado/Sierra 2500HD/3500HD
BedRug BMC07TG Tailgate Mat | 2007-2014 GM Silverado/Sierra 2500HD/3500HD

BedRug

BedRug BMC07TG Tailgate Mat | 2007-2014 GM Silverado/Sierra 2500HD/3500HD

SKU: BEDBMC07TG
$59.95
S&B 84-1000 Mud Flaps for 2.0 inch Hitch Receivers | Universal
S&B 84-1000 Mud Flaps for 2.0 inch Hitch Receivers | Universal
S&B 84-1000 Mud Flaps for 2.0 inch Hitch Receivers | Universal
S&B 84-1000 Mud Flaps for 2.0 inch Hitch Receivers | Universal
S&B 84-1000 Mud Flaps for 2.0 inch Hitch Receivers | Universal

S&B Filters

S&B 84-1000 Mud Flaps for 2.0 inch Hitch Receivers | Universal

SKU: SAB84-1000
$349
S&B 84-1002 Mud Flaps for 3.0 inch Hitch Receivers | Universal
S&B 84-1002 Mud Flaps for 3.0 inch Hitch Receivers | Universal
S&B 84-1002 Mud Flaps for 3.0 inch Hitch Receivers | Universal
S&B 84-1002 Mud Flaps for 3.0 inch Hitch Receivers | Universal
S&B 84-1002 Mud Flaps for 3.0 inch Hitch Receivers | Universal

S&B Filters

S&B 84-1002 Mud Flaps for 3.0 inch Hitch Receivers | Universal

SKU: SAB84-1002
$349

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2011-2016 6.6L Silverado & Sierra 2500HD/3500HD

Power Lift Shop All

Once you've slapped on tons of power and performance to your 2011-2016 GM 6.6L Duramax LML, it's time to upgrade it's exterior to seriously set your truck apart from the rest. You can give your GM 2500/3500 it's own custom style and appeal with any of the premium exterior parts and upgrades offered here at Alligator Performance. We carry various accessories like aftermarket side steps, fender flares, grilles, mud flaps, roof racks and more so you can outfit your rig with some of the best looking and most aggressive upgrades on the market. You can shop and drive with confidence knowing we only work with the most trusted and reliable names in the business. Once you've finished outfitting your exterior, head over and check out our selection of GM 2500/3500 Wheels & Tires to complete your custom build! GM Duramax Fitments: 2011, 2012, 2013, 2014, 2015, 2016 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>2011-2016 6.6L LML
Side Steps
Fender Flares
Grilles
Mud Flaps
Roof Racks

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Welcome to The Garage – your one-stop shop for all your car care and maintenance needs. From premium oils and filters to top-notch car care products, we have everything you need to keep your vehicle running smoothly and looking its best. Whether you're a DIY enthusiast or a professional mechanic, our carefully curated selection of high-quality products will help you take care of your ride like never before.

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