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

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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

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
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 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
Rugged Liner WWC14 Wheel Well Rear Inner Liner | 2015-2019 GM 2500HD/3500HD SRW w/o 5th Wheel
Rugged Liner WWC14 Wheel Well Rear Inner Liner | 2015-2019 GM 2500HD/3500HD SRW w/o 5th Wheel

Rugged Liner

Rugged Liner WWC14 Wheel Well Rear Inner Liner | 2015-2019 GM 2500HD/3500HD SRW w/o 5th Wheel

SKU: RUGWWC14
$139
Rugged Liner C65U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 6.5ft Bed w/o CMS
Rugged Liner C65U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 6.5ft Bed w/o CMS
Rugged Liner C65U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 6.5ft Bed w/o CMS
Rugged Liner C65U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 6.5ft Bed w/o CMS
Rugged Liner C65U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 6.5ft Bed w/o CMS
Rugged Liner C65U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 6.5ft Bed w/o CMS

Rugged Liner

Rugged Liner C65U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 6.5ft Bed w/o CMS

SKU: RUGC65U14
$279
Rugged Liner WWGMC011HD Wheel Well Rear Inner Liner | 2011-2014 GM Sierra 2500HD/3500HD SRW w/o 5th Wheel Package
Rugged Liner WWGMC011HD Wheel Well Rear Inner Liner | 2011-2014 GM Sierra 2500HD/3500HD SRW w/o 5th Wheel Package
Rugged Liner WWGMC011HD Wheel Well Rear Inner Liner | 2011-2014 GM Sierra 2500HD/3500HD SRW w/o 5th Wheel Package
Rugged Liner WWGMC011HD Wheel Well Rear Inner Liner | 2011-2014 GM Sierra 2500HD/3500HD SRW w/o 5th Wheel Package
Rugged Liner WWGMC011HD Wheel Well Rear Inner Liner | 2011-2014 GM Sierra 2500HD/3500HD SRW w/o 5th Wheel Package
Rugged Liner WWGMC011HD Wheel Well Rear Inner Liner | 2011-2014 GM Sierra 2500HD/3500HD SRW w/o 5th Wheel Package

Rugged Liner

Rugged Liner WWGMC011HD Wheel Well Rear Inner Liner | 2011-2014 GM Sierra 2500HD/3500HD SRW w/o 5th Wheel Package

SKU: RUGWWGMC011HD
$139
Rugged Liner C8U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 8ft Bed w/o CMS
Rugged Liner C8U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 8ft Bed w/o CMS
Rugged Liner C8U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 8ft Bed w/o CMS
Rugged Liner C8U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 8ft Bed w/o CMS
Rugged Liner C8U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 8ft Bed w/o CMS
Rugged Liner C8U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 8ft Bed w/o CMS

Rugged Liner

Rugged Liner C8U14 Under Rail Bed Liner | 2014-2019 GM 2500HD/3500HD 8ft Bed w/o CMS

SKU: RUGC8U14
$279
Rugged Liner C65OR07 Over Rail Truck Bed Liner | 2007-2014 GM 2500HD/3500HD 6.5ft Bed w/o CMS, w/o Bed Caps
Rugged Liner C65OR07 Over Rail Truck Bed Liner | 2007-2014 GM 2500HD/3500HD 6.5ft Bed w/o CMS, w/o Bed Caps

Rugged Liner

Rugged Liner C65OR07 Over Rail Truck Bed Liner | 2007-2014 GM 2500HD/3500HD 6.5ft Bed w/o CMS, w/o Bed Caps

SKU: RUGC65OR07
$279

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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