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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AMP Research 19-04280-STA Replacement Controller Module | Universal
AMP Research 19-04280-STA Replacement Controller Module | Universal
AMP Research 19-04280-STA Replacement Controller Module | Universal
AMP Research 19-04280-STA Replacement Controller Module | Universal
AMP Research 19-04280-STA Replacement Controller Module | Universal

AMP Research

AMP Research 19-04280-STA Replacement Controller Module | Universal

SKU: AMP19-04280-STA
$99.99
AMP Research 75126-01A Power Step | 2007-2014 GM 2500HD/3500HD
AMP Research 75126-01A Power Step | 2007-2014 GM 2500HD/3500HD
AMP Research 75126-01A Power Step | 2007-2014 GM 2500HD/3500HD
AMP Research 75126-01A Power Step | 2007-2014 GM 2500HD/3500HD
AMP Research 75126-01A Power Step | 2007-2014 GM 2500HD/3500HD

AMP Research

AMP Research 75126-01A Power Step | 2007-2014 GM 2500HD/3500HD

SKU: AMP75126-01A
$1,599.99
AMP Research 76404-01A OBD-II Splitter | Universal
AMP Research 76404-01A OBD-II Splitter | Universal
AMP Research 76404-01A OBD-II Splitter | Universal
AMP Research 76404-01A OBD-II Splitter | Universal

AMP Research

AMP Research 76404-01A OBD-II Splitter | Universal

SKU: AMP76404-01A
$119.99
AMP Research 76154-01A Power Step | 2014-2018 GM Silverado/Sierra 2500HD/3500HD
AMP Research 76154-01A Power Step | 2014-2018 GM Silverado/Sierra 2500HD/3500HD
AMP Research 76154-01A Power Step | 2014-2018 GM Silverado/Sierra 2500HD/3500HD

AMP Research

AMP Research 76154-01A Power Step | 2014-2018 GM Silverado/Sierra 2500HD/3500HD

SKU: AMP76154-01A
$1,799.99
TruXedo 1271116 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2014 GM Sierra/Silverado 2500HD/3500HD 6.5ft Bed
TruXedo 1271116 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2014 GM Sierra/Silverado 2500HD/3500HD 6.5ft Bed
TruXedo 1271116 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2014 GM Sierra/Silverado 2500HD/3500HD 6.5ft Bed
TruXedo 1271116 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2014 GM Sierra/Silverado 2500HD/3500HD 6.5ft Bed
TruXedo 1271116 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2014 GM Sierra/Silverado 2500HD/3500HD 6.5ft Bed
TruXedo 1271116 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2014 GM Sierra/Silverado 2500HD/3500HD 6.5ft Bed

Truxedo

TruXedo 1271116 Pro X15 TS Soft Roll-Up Tonneau Cover w/ T-Slot Rails | 2007-2014 GM Sierra/Silverado 2500HD/3500HD 6.5ft Bed

SKU: TXO1271116
$699.99
AMP Research 75407-01A Bed Step 2 | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75407-01A Bed Step 2 | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75407-01A Bed Step 2 | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75407-01A Bed Step 2 | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75407-01A Bed Step 2 | 2014-2019 GM Silverado/Sierra 2500HD/3500HD

AMP Research

AMP Research 75407-01A Bed Step 2 | 2014-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: AMP75407-01A
$329.99
S&B 84-1001 Mud Flaps for 2.5" inch Hitch Receivers | Universal
S&B 84-1001 Mud Flaps for 2.5" inch Hitch Receivers | Universal
S&B 84-1001 Mud Flaps for 2.5" inch Hitch Receivers | Universal
S&B 84-1001 Mud Flaps for 2.5" inch Hitch Receivers | Universal
S&B 84-1001 Mud Flaps for 2.5" inch Hitch Receivers | Universal

S&B Filters

S&B 84-1001 Mud Flaps for 2.5" inch Hitch Receivers | Universal

SKU: SAB84-1001
$349
AMP Research 75131-01A Light Kit | AMP Steps with New Style Controller | Universal
AMP Research 75131-01A Light Kit | AMP Steps with New Style Controller | Universal
AMP Research 75131-01A Light Kit | AMP Steps with New Style Controller | Universal
AMP Research 75131-01A Light Kit | AMP Steps with New Style Controller | Universal

AMP Research

AMP Research 75131-01A Light Kit | AMP Steps with New Style Controller | Universal

SKU: AMP75131-01A
$169.99
AMP Research 75154-01A-B Power Step | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75154-01A-B Power Step | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75154-01A-B Power Step | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75154-01A-B Power Step | 2014-2019 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75154-01A-B Power Step | 2014-2019 GM Silverado/Sierra 2500HD/3500HD

AMP Research

AMP Research 75154-01A-B Power Step | 2014-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: AMP75154-01A-B
$1,599.99
BAK Industries 226122 G2 Tonneau Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 226122 G2 Tonneau Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 226122 G2 Tonneau Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed

BAK Industries

BAK Industries 226122 G2 Tonneau Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed

SKU: BAK226122
$1,099.99
$1,299.99
BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed

BAK Industries

BAK Industries 448122 MX4 Hard Folding Cover | 2014-2019 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed

SKU: BAK448122
$1,249.99
$1,399.99
Bestop 16210-01 EZ Fold Tonneau Cover | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
Bestop 16210-01 EZ Fold Tonneau Cover | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
Bestop 16210-01 EZ Fold Tonneau Cover | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
Bestop 16210-01 EZ Fold Tonneau Cover | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed

Bestop

Bestop 16210-01 EZ Fold Tonneau Cover | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed

SKU: BST16210-01
$459.99
Bestop 16218-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 8ft Bed
Bestop 16218-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 8ft Bed
Bestop 16218-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 8ft Bed
Bestop 16218-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 8ft Bed

Bestop

Bestop 16218-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 8ft Bed

SKU: BST16218-01
$459.99
Bestop 19210-01 EZ Roll Tonneau Cover | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
Bestop 19210-01 EZ Roll Tonneau Cover | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed
Bestop 19210-01 EZ Roll Tonneau Cover | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed

Bestop

Bestop 19210-01 EZ Roll Tonneau Cover | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD 8ft Bed

SKU: BST19210-01
$349.99
Bestop 19211-01 EZ Roll Tonneau Cover | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed w/o BMS
Bestop 19211-01 EZ Roll Tonneau Cover | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed w/o BMS

Bestop

Bestop 19211-01 EZ Roll Tonneau Cover | 2007-2014 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed w/o BMS

SKU: BST19211-01
$349.99
BAK Industries 226121 G2 Tonneau Cover | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed
BAK Industries 226121 G2 Tonneau Cover | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed
BAK Industries 226121 G2 Tonneau Cover | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed
BAK Industries 226121 G2 Tonneau Cover | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed
BAK Industries 226121 G2 Tonneau Cover | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed

BAK Industries

BAK Industries 226121 G2 Tonneau Cover | 2014-2018 GM Silverado/Sierra 1500/2500HD/3500HD 6.5ft Bed

SKU: BAK226121
$1,049.99
$1,249.99
Bestop 16217-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed
Bestop 16217-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed
Bestop 16217-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed

Bestop

Bestop 16217-01 EZ Fold Tonneau Cover | 2014-2018 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed

SKU: BST16217-01
$459.99
Bestop 76303-35 Supertop 6.5" inch Top | 1999-2017 GM Silverado/Sierra 2500HD/3500HD
Bestop 76303-35 Supertop 6.5" inch Top | 1999-2017 GM Silverado/Sierra 2500HD/3500HD

Bestop

Bestop 76303-35 Supertop 6.5" inch Top | 1999-2017 GM Silverado/Sierra 2500HD/3500HD

SKU: BST76303-35
$999.99
Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed
Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed

Rough Country

Rough Country 49119551 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 5.8ft Bed

SKU: RCS49119551
$849.95
Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed
Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed

Rough Country

Rough Country 49119651 Hard Tri-Fold Flip Up Bed Cover | 2014-2019 GM Silverado/Sierra 2500HD/3500HD 6.75ft Bed

SKU: RCS49119651
$849.95
Rough Country 10764 EXO Win Mount Kit | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
Rough Country 10764 EXO Win Mount Kit | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
Rough Country 10764 EXO Win Mount Kit | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
Rough Country 10764 EXO Win Mount Kit | 2011-2019 GM Silverado/Sierra 2500HD/3500HD
Rough Country 10764 EXO Win Mount Kit | 2011-2019 GM Silverado/Sierra 2500HD/3500HD

Rough Country

Rough Country 10764 EXO Win Mount Kit | 2011-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: RCS10764
$699.95
ADD C9988320001NA Overland Rack | Universal
ADD C9988320001NA Overland Rack | Universal
ADD C9988320001NA Overland Rack | Universal
ADD C9988320001NA Overland Rack | Universal
ADD C9988320001NA Overland Rack | Universal

Addictive Desert Designs

ADD C9988320001NA Overland Rack | Universal

SKU: ADDC9988320001NA
$2,998.98
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
$749.99

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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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