2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Exterior Upgrades

2020-2025 6.6L Silverado & Sierra 2500HD/3500HD

2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Bed Liners

Bed Liners

2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Bed Racks

Bed Racks

2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Bull Bars

Bull Bars

2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Bumpers

Bumpers

2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Fender Flares

Fender Flares

2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Grilles & Grille Guards

Grilles & Grille Guards

2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Mud Flaps

Mud Flaps

2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Roof Racks

Roof Racks

2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Side Steps

Side Steps

2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Tonneau Covers

Tonneau Covers

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Rough Country F-G12011A-G6M Pocket Fender Flares (Titanium Rush) | 2020-2025 Sierra 2500HD/3500HD
Rough Country F-G12011A-G6M Pocket Fender Flares (Titanium Rush) | 2020-2025 Sierra 2500HD/3500HD

Rough Country

Rough Country F-G12011A-G6M Pocket Fender Flares (Titanium Rush) | 2020-2025 Sierra 2500HD/3500HD

SKU: RCSF-G12011A-G6M
$509.95
$599.95
Rough Country F-G12011A-GJI Pocket Fender Flares (Dark Sky) | 2020-2025 Sierra 2500HD/3500HD
Rough Country F-G12011A-GJI Pocket Fender Flares (Dark Sky) | 2020-2025 Sierra 2500HD/3500HD

Rough Country

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

SKU: RCSF-G12011A-GJI
$509.95
$599.95
Rough Country F-G12011A-GLT Pocket Fender Flares (Dynamic Blue) | 2020-2025 Sierra 2500HD/3500HD
Rough Country F-G12011A-GLT Pocket Fender Flares (Dynamic Blue) | 2020-2025 Sierra 2500HD/3500HD

Rough Country

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

SKU: RCSF-G12011A-GLT
$509.95
$599.95
Ranch Hand GGG201BL1C Legend Grille Guard (Front Camera) | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
Ranch Hand GGG201BL1C Legend Grille Guard (Front Camera) | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
Ranch Hand GGG201BL1C Legend Grille Guard (Front Camera) | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
Ranch Hand GGG201BL1C Legend Grille Guard (Front Camera) | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
Ranch Hand GGG201BL1C Legend Grille Guard (Front Camera) | 2020-2023 GM Silverado/Sierra 2500HD/3500HD

Ranch Hand

Ranch Hand GGG201BL1C Legend Grille Guard (Front Camera) | 2020-2023 GM Silverado/Sierra 2500HD/3500HD

SKU: RANGGG201BL1C
$912.74
Ranch Hand GGG201BL1 Legend Grille Guard | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
Ranch Hand GGG201BL1 Legend Grille Guard | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
Ranch Hand GGG201BL1 Legend Grille Guard | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
Ranch Hand GGG201BL1 Legend Grille Guard | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
Ranch Hand GGG201BL1 Legend Grille Guard | 2020-2023 GM Silverado/Sierra 2500HD/3500HD

Ranch Hand

Ranch Hand GGG201BL1 Legend Grille Guard | 2020-2023 GM Silverado/Sierra 2500HD/3500HD

SKU: RANGGG201BL1
$912.74
Ranch Hand GGC201BL1 Legend Grille Guard | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
Ranch Hand GGC201BL1 Legend Grille Guard | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
Ranch Hand GGC201BL1 Legend Grille Guard | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
Ranch Hand GGC201BL1 Legend Grille Guard | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
Ranch Hand GGC201BL1 Legend Grille Guard | 2020-2023 GM Silverado/Sierra 2500HD/3500HD

Ranch Hand

Ranch Hand GGC201BL1 Legend Grille Guard | 2020-2023 GM Silverado/Sierra 2500HD/3500HD

SKU: RANGGC201BL1
$912.74
ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD/3500HD
ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD/3500HD

Addictive Desert Designs

ADD R270021280103 Bomber HD Rear Bumper with Blind Spot | 2020-2023 GM Silverado/Sierra 2500HD/3500HD

SKU: ADDR270021280103
$1,998.98
Westin 57-93995 HDX Win Mount Grille Guard | 2020-2023 Silverado 2500HD/3500HD
Westin 57-93995 HDX Win Mount Grille Guard | 2020-2023 Silverado 2500HD/3500HD
Westin 57-93995 HDX Win Mount Grille Guard | 2020-2023 Silverado 2500HD/3500HD
Westin 57-93995 HDX Win Mount Grille Guard | 2020-2023 Silverado 2500HD/3500HD
Westin 57-93995 HDX Win Mount Grille Guard | 2020-2023 Silverado 2500HD/3500HD

Westin

Westin 57-93995 HDX Win Mount Grille Guard | 2020-2023 Silverado 2500HD/3500HD

SKU: WES57-93995
$1,621.99
Westin 57-923995 HDX Winch Mount Modular Grille Guard - Black | 2020-2023 Silverado 2500HD/ 2020-2023 3500HD
Westin 57-923995 HDX Winch Mount Modular Grille Guard - Black | 2020-2023 Silverado 2500HD/ 2020-2023 3500HD

Westin

Westin 57-923995 HDX Winch Mount Modular Grille Guard - Black | 2020-2023 Silverado 2500HD/ 2020-2023 3500HD

SKU: WES57-923995
$1,207.99
Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2023 Silverado 2500HD
Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2023 Silverado 2500HD
Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2023 Silverado 2500HD
Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2023 Silverado 2500HD
Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2023 Silverado 2500HD

Westin

Westin 57-3995S HDX Black Steel Grille Guard with Front Sensors | 2020-2023 Silverado 2500HD

SKU: WES57-3995S
$1,259.99
B&W PUCP7543WA Cab Protector - White | 2020-2021 GM Silverado/Sierra 2500HD/3500HD
B&W PUCP7543WA Cab Protector - White | 2020-2021 GM Silverado/Sierra 2500HD/3500HD
B&W PUCP7543WA Cab Protector - White | 2020-2021 GM Silverado/Sierra 2500HD/3500HD

B&W Trailer hitches

B&W PUCP7543WA Cab Protector - White | 2020-2021 GM Silverado/Sierra 2500HD/3500HD

SKU: BNWPUCP7543WA
$899
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 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 | 2020-2023 Silverado 2500HD/3500HD
Westin 57-3990 HDX Stainless Steel Grille Guard | 2020-2023 Silverado 2500HD/3500HD

Westin

Westin 57-3990 HDX Stainless Steel Grille Guard | 2020-2023 Silverado 2500HD/3500HD

SKU: WES57-3990
$2,006.99
Westin 57-3995 HDX Black Steel Grille Guard | 2020-2023 Silverado 2500HD
Westin 57-3995 HDX Black Steel Grille Guard | 2020-2023 Silverado 2500HD
Westin 57-3995 HDX Black Steel Grille Guard | 2020-2023 Silverado 2500HD
Westin 57-3995 HDX Black Steel Grille Guard | 2020-2023 Silverado 2500HD
Westin 57-3995 HDX Black Steel Grille Guard | 2020-2023 Silverado 2500HD

Westin

Westin 57-3995 HDX Black Steel Grille Guard | 2020-2023 Silverado 2500HD

SKU: WES57-3995
$1,146.99
Westin 57-23990 HDX Stainless Steel Modular Grille Guard | 2020-2023 Silverado 2500HD/3500HD
Westin 57-23990 HDX Stainless Steel Modular Grille Guard | 2020-2023 Silverado 2500HD/3500HD
Westin 57-23990 HDX Stainless Steel Modular Grille Guard | 2020-2023 Silverado 2500HD/3500HD

Westin

Westin 57-23990 HDX Stainless Steel Modular Grille Guard | 2020-2023 Silverado 2500HD/3500HD

SKU: WES57-23990
$1,603.99
Westin 40-33995 Sportsman X Grille Guard | 2020-2023 Silverado 2500HD/3500HD
Westin 40-33995 Sportsman X Grille Guard | 2020-2023 Silverado 2500HD/3500HD
Westin 40-33995 Sportsman X Grille Guard | 2020-2023 Silverado 2500HD/3500HD
Westin 40-33995 Sportsman X Grille Guard | 2020-2023 Silverado 2500HD/3500HD
Westin 40-33995 Sportsman X Grille Guard | 2020-2023 Silverado 2500HD/3500HD

Westin

Westin 40-33995 Sportsman X Grille Guard | 2020-2023 Silverado 2500HD/3500HD

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

Westin

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

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

Westin

Westin 32-3995L Ultimate LED Bull Bar | 2020-2025 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
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

BedRug TW2X4MAT TrackMat 2ft x 4ft Folding Utility Mat | Universal

SKU: BEDTW2X4MAT
$34.63
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 KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD

Front Runner

Front Runner KRCS008 Retrax 5.7ft Triple Load Bar Kit | 2007-2025 GM Silverado/Sierra 1500/2500HD/3500HD

SKU: FROKRCS008
$684
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 1500/2500HD/3500HD
Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 1500/2500HD/3500HD

Front Runner

Front Runner KRCS007T Retrax 6.5ft Slimline II Load Bed Rack Kit | 1988-2025 GM Silverado/Sierra 1500/2500HD/3500HD

SKU: FROKRCS007T
$1,957

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2020-2025 6.6L Silverado & Sierra 2500HD/3500HD

Power Lift Shop All

If you've already added on powerful performance mods to your 2020-2025 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 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. 

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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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