2020-2026 GM 2500HD/3500HD 6.6L L5P Duramax Exterior Upgrades

2020-2026 GM 2500HD/3500HD 6.6L L5P Duramax Bed Liners

Bed Liners

2020-2026 GM 2500HD/3500HD 6.6L L5P Duramax Bed Racks

Bed Racks

2020-2026 GM 2500HD/3500HD 6.6L L5P Duramax Bull Bars

Bull Bars

2020-2026 GM 2500HD/3500HD 6.6L L5P Duramax Bumpers

Bumpers

2020-2026 GM 2500HD/3500HD 6.6L L5P Duramax Fender Flares

Fender Flares

2020-2026 GM 2500HD/3500HD 6.6L L5P Duramax Grilles & Grille Guards

Grilles & Grille Guards

2020-2026 GM 2500HD/3500HD 6.6L L5P Duramax Mud Flaps

Mud Flaps

2020-2026 GM 2500HD/3500HD 6.6L L5P Duramax Roof Racks

Roof Racks

2020-2026 GM 2500HD/3500HD 6.6L L5P Duramax Side Steps

Side Steps

2020-2026 GM 2500HD/3500HD 6.6L L5P Duramax Tonneau Covers

Tonneau Covers

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Rough Country F-G12011A-GJI Pocket Fender Flares (Dark Sky) | 2020-2025 GM/GMC Sierra 2500HD/3500HD
Rough Country F-G12011A-GJI Pocket Fender Flares (Dark Sky) | 2020-2025 GM/GMC Sierra 2500HD/3500HD
Rough Country F-G12011A-GJI Pocket Fender Flares (Dark Sky) | 2020-2025 GM/GMC Sierra 2500HD/3500HD

Rough Country

Rough Country F-G12011A-GJI Pocket Fender Flares (Dark Sky) | 2020-2025 GM/GMC Sierra 2500HD/3500HD

SKU: RCSF-G12011A-GJI
$729.95
Rough Country F-G12011A-GLT Pocket Fender Flares (Dynamic Blue) | 2020-2025 GM/GMC Sierra 2500HD/3500HD
Rough Country F-G12011A-GLT Pocket Fender Flares (Dynamic Blue) | 2020-2025 GM/GMC Sierra 2500HD/3500HD

Rough Country

Rough Country F-G12011A-GLT Pocket Fender Flares (Dynamic Blue) | 2020-2025 GM/GMC Sierra 2500HD/3500HD

SKU: RCSF-G12011A-GLT
$729.95
ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD
ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD
ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD
ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD
ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD
ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD

Addictive Desert Designs

ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD

SKU: ADDR270021280103
$1,998.98
Westin 57-93995 HDX Win Mount Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
IN STOCK
Westin 57-93995 HDX Win Mount Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 57-93995 HDX Win Mount Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 57-93995 HDX Win Mount Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 57-93995 HDX Win Mount Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 57-93995 HDX Win Mount Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

Westin

Westin 57-93995 HDX Win Mount Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

SKU: WES57-93995
$1,621.99
Westin 57-923995 HDX Winch Mount Modular Grille Guard - Black | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 57-923995 HDX Winch Mount Modular Grille Guard - Black | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 57-923995 HDX Winch Mount Modular Grille Guard - Black | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

Westin

Westin 57-923995 HDX Winch Mount Modular Grille Guard - Black | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

SKU: WES57-923995
$1,207.99
Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2025 GM/Chevrolet Silverado 2500HD/3500HD
IN STOCK
Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2025 GM/Chevrolet Silverado 2500HD/3500HD
Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2025 GM/Chevrolet Silverado 2500HD/3500HD
Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2025 GM/Chevrolet Silverado 2500HD/3500HD
Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2025 GM/Chevrolet Silverado 2500HD/3500HD
Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2025 GM/Chevrolet Silverado 2500HD/3500HD

Westin

Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2025 GM/Chevrolet Silverado 2500HD/3500HD

SKU: WES57-3995S
$1,259.99
B&W PUCP7543BA Cab Protector - Black | 2020-2021 GM Silverado/Sierra 2500HD/3500HD
IN STOCK
B&W PUCP7543BA Cab Protector - Black | 2020-2021 GM Silverado/Sierra 2500HD/3500HD
B&W PUCP7543BA Cab Protector - Black | 2020-2021 GM Silverado/Sierra 2500HD/3500HD

B&W Trailer hitches

B&W PUCP7543BA Cab Protector - Black | 2020-2021 GM Silverado/Sierra 2500HD/3500HD

SKU: BNWPUCP7543BA
$899
Westin 57-3990 HDX Stainless Steel Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
IN STOCK
Westin 57-3990 HDX Stainless Steel Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 57-3990 HDX Stainless Steel Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 57-3990 HDX Stainless Steel Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

Westin

Westin 57-3990 HDX Stainless Steel Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

SKU: WES57-3990
$2,006.99
Westin 57-23990 HDX Stainless Steel Modular Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
IN STOCK
Westin 57-23990 HDX Stainless Steel Modular Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 57-23990 HDX Stainless Steel Modular Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 57-23990 HDX Stainless Steel Modular Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 57-23990 HDX Stainless Steel Modular Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

Westin

Westin 57-23990 HDX Stainless Steel Modular Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

SKU: WES57-23990
$1,603.99
Westin 40-33995 Sportsman X Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
IN STOCK
Westin 40-33995 Sportsman X Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 40-33995 Sportsman X Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 40-33995 Sportsman X Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 40-33995 Sportsman X Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 40-33995 Sportsman X Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

Westin

Westin 40-33995 Sportsman X Grille Guard | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

SKU: WES40-33995
$1,102.99
Westin 32-3995 Ultimate Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 32-3995 Ultimate Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 32-3995 Ultimate Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 32-3995 Ultimate Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 32-3995 Ultimate Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 32-3995 Ultimate Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

Westin

Westin 32-3995 Ultimate Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

SKU: WES32-3995
$594.44
Westin 32-3995L Ultimate LED Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 32-3995L Ultimate LED Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 32-3995L Ultimate LED Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 32-3995L Ultimate LED Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD
Westin 32-3995L Ultimate LED Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

Westin

Westin 32-3995L Ultimate LED Bull Bar | 2020-2025 GM Chevrolet Silverado 2500HD/3500HD

SKU: WES32-3995L
$757.68
Westin 31-6020 E-Series Bull Bar (Polished) | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
Westin 31-6020 E-Series Bull Bar (Polished) | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
Westin 31-6020 E-Series Bull Bar (Polished) | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
Westin 31-6020 E-Series Bull Bar (Polished) | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
Westin 31-6020 E-Series Bull Bar (Polished) | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
Westin 31-6020 E-Series Bull Bar (Polished) | 2020-2025 GM Silverado/Sierra 2500HD/3500HD

Westin

Westin 31-6020 E-Series Bull Bar (Polished) | 2020-2025 GM Silverado/Sierra 2500HD/3500HD

SKU: WES31-6020
$642.64
Westin 31-6025 E-Series Bull Bar - Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
IN STOCK
Westin 31-6025 E-Series Bull Bar - Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
Westin 31-6025 E-Series Bull Bar - Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
Westin 31-6025 E-Series Bull Bar - Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
Westin 31-6025 E-Series Bull Bar - Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
Westin 31-6025 E-Series Bull Bar - Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD

Westin

Westin 31-6025 E-Series Bull Bar - Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD

SKU: WES31-6025
$380.49
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
ACI B1020099 Lomax Hard Tri-Fold Tonneau Cover Matte Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed
IN STOCK
ACI B1020099 Lomax Hard Tri-Fold Tonneau Cover Matte Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed
ACI B1020099 Lomax Hard Tri-Fold Tonneau Cover Matte Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed
ACI B1020099 Lomax Hard Tri-Fold Tonneau Cover Matte Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed
ACI B1020099 Lomax Hard Tri-Fold Tonneau Cover Matte Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed
ACI B1020099 Lomax Hard Tri-Fold Tonneau Cover Matte Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed

Agricover

ACI B1020099 Lomax Hard Tri-Fold Tonneau Cover Matte Black | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.5ft Bed

SKU: ACIB1020099
$1,200.20
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
Kleinn HK7 Pro Blaster Triple Train Horn Kit with 150PSI 100% Duty Onboard Air System | Universal
Kleinn HK7 Pro Blaster Triple Train Horn Kit with 150PSI 100% Duty Onboard Air System | Universal
Kleinn HK7 Pro Blaster Triple Train Horn Kit with 150PSI 100% Duty Onboard Air System | Universal

Kleinn Automotive Air Horns

Kleinn HK7 Pro Blaster Triple Train Horn Kit with 150PSI 100% Duty Onboard Air System | Universal

SKU: KLNHK7
$839.95
AMP Research 77254-01A PowerStep XL 3 inch Additional Drop | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
IN STOCK
AMP Research 77254-01A PowerStep XL 3 inch Additional Drop | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
AMP Research 77254-01A PowerStep XL 3 inch Additional Drop | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
AMP Research 77254-01A PowerStep XL 3 inch Additional Drop | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
AMP Research 77254-01A PowerStep XL 3 inch Additional Drop | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
AMP Research 77254-01A PowerStep XL 3 inch Additional Drop | 2020-2023 GM Silverado/Sierra 2500HD/3500HD

AMP Research

AMP Research 77254-01A PowerStep XL 3 inch Additional Drop | 2020-2023 GM Silverado/Sierra 2500HD/3500HD

SKU: AMP77254-01A
$2,299.99
AMP Research 75327-01A Bed Step | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
IN STOCK
AMP Research 75327-01A Bed Step | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75327-01A Bed Step | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75327-01A Bed Step | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75327-01A Bed Step | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
AMP Research 75327-01A Bed Step | 2020-2025 GM Silverado/Sierra 2500HD/3500HD

AMP Research

AMP Research 75327-01A Bed Step | 2020-2025 GM Silverado/Sierra 2500HD/3500HD

SKU: AMP75327-01A
$329.99
Putco 29858 Pop Up Locker Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed
Putco 29858 Pop Up Locker Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed
Putco 29858 Pop Up Locker Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed
Putco 29858 Pop Up Locker Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed
Putco 29858 Pop Up Locker Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed

Putco

Putco 29858 Pop Up Locker Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed

SKU: PUT29858
$698.99
Putco 99858 Nylon Locker Side Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed
IN STOCK
Putco 99858 Nylon Locker Side Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed
Putco 99858 Nylon Locker Side Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed
Putco 99858 Nylon Locker Side Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed

Putco

Putco 99858 Nylon Locker Side Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed

SKU: PUT99858
$341.99
Putco 79858 SSR Nylon Locker Side Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed
IN STOCK
Putco 79858 SSR Nylon Locker Side Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed
Putco 79858 SSR Nylon Locker Side Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed
Putco 79858 SSR Nylon Locker Side Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed

Putco

Putco 79858 SSR Nylon Locker Side Rails | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.9ft Bed

SKU: PUT79858
$320.99

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DIESEL TRUCK EXPERTS STANDING BY

If you've already added on powerful performance mods to your 2020-2026 GM 2500HD/3500HD 6.6L Duramax, it's time to take it's style and functionality to the next level with some premium exterior upgrades. At Alligator Performance, we offer a wide range of aftermarket exterior parts, including side steps, fender flares, grilles, mud flaps, and roof racks, all designed to enhance both the look and utility of your GM Sierra or Silverado 2500HD/3500HD. Whether you're looking to boost your truck's rugged aesthetic with bold fender flares or improve its practicality with a durable roof rack, we have the perfect upgrades to set your truck apart from the crowd. Combine these accessories with some Lighting Upgrades and Suspension Components to create a fully customized, adventure-ready truck that looks as tough as it performs.  GM Duramax Fitments: 2020, 2021, 2022, 2023, 2024, 2025, 2026 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. 

Side Steps
Fender Flares
Mud Flaps

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