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

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 LML Duramax Bumpers

Bumpers

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 Side Steps

Side Steps

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

Tonneau Covers

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AMP Research 86147-01A PowerStep SmartSeries Running Boards | 2015-2016 GM Silverado/Sierra 2500HD/3500HD
AMP Research 86147-01A PowerStep SmartSeries Running Boards | 2015-2016 GM Silverado/Sierra 2500HD/3500HD
AMP Research 86147-01A PowerStep SmartSeries Running Boards | 2015-2016 GM Silverado/Sierra 2500HD/3500HD
AMP Research 86147-01A PowerStep SmartSeries Running Boards | 2015-2016 GM Silverado/Sierra 2500HD/3500HD
AMP Research 86147-01A PowerStep SmartSeries Running Boards | 2015-2016 GM Silverado/Sierra 2500HD/3500HD

AMP Research

AMP Research 86147-01A PowerStep SmartSeries Running Boards | 2015-2016 GM Silverado/Sierra 2500HD/3500HD

SKU: AMP86147-01A
$1,949.99
Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed

Truxedo

Truxedo 1272216 Pro X15 TS Soft Roll-Up Tonneau Cover w/T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed

SKU: TXO1272216
$719.99
Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed
Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed
Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed
Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed
Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed
Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed

Truxedo

Truxedo 1272016 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2015-2019 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.5ft Bed

SKU: TXO1272016
$669.99
TruXedo 1271616 Pro X15 TS Tonneau Cover w/ T-Slot Rails | 2007-2014 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
TruXedo 1271616 Pro X15 TS Tonneau Cover w/ T-Slot Rails | 2007-2014 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
TruXedo 1271616 Pro X15 TS Tonneau Cover w/ T-Slot Rails | 2007-2014 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
TruXedo 1271616 Pro X15 TS Tonneau Cover w/ T-Slot Rails | 2007-2014 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
TruXedo 1271616 Pro X15 TS Tonneau Cover w/ T-Slot Rails | 2007-2014 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed
TruXedo 1271616 Pro X15 TS Tonneau Cover w/ T-Slot Rails | 2007-2014 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed

Truxedo

TruXedo 1271616 Pro X15 TS Tonneau Cover w/ T-Slot Rails | 2007-2014 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 8ft Bed

SKU: TXO1271616
$719.99
AMP Research 74608-01A BedXtender HD Quick Mount Bracket Kit | Universal
AMP Research 74608-01A BedXtender HD Quick Mount Bracket Kit | Universal
AMP Research 74608-01A BedXtender HD Quick Mount Bracket Kit | Universal

AMP Research

AMP Research 74608-01A BedXtender HD Quick Mount Bracket Kit | Universal

SKU: AMP74608-01A
$29.99
TruXedo 1271516 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2013 GM Sierra/Silverado 2500HD/3500HD DRW 8ft Bed w/ Rail Caps
TruXedo 1271516 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2013 GM Sierra/Silverado 2500HD/3500HD DRW 8ft Bed w/ Rail Caps
TruXedo 1271516 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2013 GM Sierra/Silverado 2500HD/3500HD DRW 8ft Bed w/ Rail Caps
TruXedo 1271516 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2013 GM Sierra/Silverado 2500HD/3500HD DRW 8ft Bed w/ Rail Caps
TruXedo 1271516 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2013 GM Sierra/Silverado 2500HD/3500HD DRW 8ft Bed w/ Rail Caps
TruXedo 1271516 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2013 GM Sierra/Silverado 2500HD/3500HD DRW 8ft Bed w/ Rail Caps

Truxedo

TruXedo 1271516 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2013 GM Sierra/Silverado 2500HD/3500HD DRW 8ft Bed w/ Rail Caps

SKU: TXO1271516
$719.99
AMP Research 75400-01A Bed Step 2 | 1999-2014 GM Silverado/Sierra 1500/2500HD/3500HD
AMP Research 75400-01A Bed Step 2 | 1999-2014 GM Silverado/Sierra 1500/2500HD/3500HD
AMP Research 75400-01A Bed Step 2 | 1999-2014 GM Silverado/Sierra 1500/2500HD/3500HD

AMP Research

AMP Research 75400-01A Bed Step 2 | 1999-2014 GM Silverado/Sierra 1500/2500HD/3500HD

SKU: AMP75400-01A
$329.99
BedRug BRZSPRAYON Spray-In Adhesion Kit for BedRug Liners & Mats | Universal
BedRug BRZSPRAYON Spray-In Adhesion Kit for BedRug Liners & Mats | Universal
BedRug BRZSPRAYON Spray-In Adhesion Kit for BedRug Liners & Mats | Universal
BedRug BRZSPRAYON Spray-In Adhesion Kit for BedRug Liners & Mats | Universal

BedRug

BedRug BRZSPRAYON Spray-In Adhesion Kit for BedRug Liners & Mats | Universal

SKU: BEDBRZSPRAYON
$19.95
Rough Country PSR50718 Dual Electric Motor Power Running Board | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD
Rough Country PSR50718 Dual Electric Motor Power Running Board | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD
Rough Country PSR50718 Dual Electric Motor Power Running Board | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD
Rough Country PSR50718 Dual Electric Motor Power Running Board | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD

Rough Country

Rough Country PSR50718 Dual Electric Motor Power Running Board | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD

SKU: RCSPSR50718
$1,299.95
AMP Research 76400-01A Plug-n-Play Conversion Kit for PowerSteps | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
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
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 7312111-BR HD Stealth Laser Torch Grille with 30" inch LED Bar Black with Black Studs | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex 7312111-BR HD Stealth Laser Torch Grille with 30" inch LED Bar Black with Black Studs | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex 7312111-BR HD Stealth Laser Torch Grille with 30" inch LED Bar Black with Black Studs | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex 7312111-BR HD Stealth Laser Torch Grille with 30" inch LED Bar Black with Black Studs | 2015-2019 GMC Sierra 2500HD/3500HD
T-Rex 7312111-BR HD Stealth Laser Torch Grille with 30" inch LED Bar Black with Black Studs | 2015-2019 GMC Sierra 2500HD/3500HD

T-Rex Grilles

T-Rex 7312111-BR HD Stealth Laser Torch Grille with 30" inch LED Bar Black with Black Studs | 2015-2019 GMC Sierra 2500HD/3500HD

SKU: TRX7312111-BR
$1,389.50
T-Rex 7311241 HD Laser Torch Grille with 30" inch LED Bar Black with Chrome Studs | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 7311241 HD Laser Torch Grille with 30" inch LED Bar Black with Chrome Studs | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 7311241 HD Laser Torch Grille with 30" inch LED Bar Black with Chrome Studs | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 7311241 HD Laser Torch Grille with 30" inch LED Bar Black with Chrome Studs | 2015-2019 GM Silverado 2500HD/3500HD
T-Rex 7311241 HD Laser Torch Grille with 30" inch LED Bar Black with Chrome Studs | 2015-2019 GM Silverado 2500HD/3500HD

T-Rex Grilles

T-Rex 7311241 HD Laser Torch Grille with 30" inch LED Bar Black with Chrome Studs | 2015-2019 GM Silverado 2500HD/3500HD

SKU: TRX7311241
$1,199.50
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 25209 Bumper Billet Grille | 2011-2014 GMC Sierra 2500HD/3500HD
T-Rex 25209 Bumper Billet Grille | 2011-2014 GMC Sierra 2500HD/3500HD

T-Rex Grilles

T-Rex 25209 Bumper Billet Grille | 2011-2014 GMC Sierra 2500HD/3500HD

SKU: TRX25209
$97.14
T-Rex 21209B Black Billet Grille | 2011-2014 GMC Sierra 2500HD/3500HD
T-Rex 21209B Black Billet Grille | 2011-2014 GMC Sierra 2500HD/3500HD
T-Rex 21209B Black Billet Grille | 2011-2014 GMC Sierra 2500HD/3500HD

T-Rex Grilles

T-Rex 21209B Black Billet Grille | 2011-2014 GMC Sierra 2500HD/3500HD

SKU: TRX21209B
$417.14
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 21114 Horizontal Billet Grille Overlay | 2011-2014 GM Silverado 2500HD/3500HD
T-Rex 21114 Horizontal Billet Grille Overlay | 2011-2014 GM Silverado 2500HD/3500HD
T-Rex 21114 Horizontal Billet Grille Overlay | 2011-2014 GM Silverado 2500HD/3500HD
T-Rex 21114 Horizontal Billet Grille Overlay | 2011-2014 GM Silverado 2500HD/3500HD
T-Rex 21114 Horizontal Billet Grille Overlay | 2011-2014 GM Silverado 2500HD/3500HD

T-Rex Grilles

T-Rex 21114 Horizontal Billet Grille Overlay | 2011-2014 GM Silverado 2500HD/3500HD

SKU: TRX21114
$371.43

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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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