2021 GMC Sierra Exhaust Systems
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- Flowmaster®FlowFX™ 409 SS Cat-Back Exhaust System with Split Rear ExitGMC Sierra 6.2L 2021, FlowFX™ 409 SS Cat-Back Exhaust System with Split Rear Exit by Flowmaster®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 2.5" to 3.5". Exhaust System Sound: Moderate....$733.95
- Flowmaster®FlowFX™ Extreme 409 SS Cat-Back Exhaust System with Single Rear ExitGMC Sierra 5.3L 2021, FlowFX™ Extreme 409 SS Cat-Back Exhaust System with Single Rear Exit by Flowmaster®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 3". Exhaust System Sound: Aggressive /...$334.95
- MBRP®Pro Series™ 304 SS Cat-Back Exhaust System with Dual Side ExitGMC Sierra 4.3L / 5.3L 2021, Pro Series™ 304 SS Cat-Back Exhaust System with Dual Side Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 3". Exhaust System Sound: Moderate. The PRO...$719.99
- MBRP®Pro Series™ 304 SS Cat-Back Exhaust System with Quad Rear ExitGMC Sierra 5.3L Gas 2021, Pro Series™ 304 SS Cat-Back Exhaust System with Quad Rear Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 3" to 2.5". Exhaust System Sound: Moderate. The...$1,154.99
- MBRP®Pro Series™ 304 SS Cat-Back Exhaust System with Split Rear ExitGMC Sierra 2021, Pro Series™ 304 SS Cat-Back Exhaust System with Split Rear Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 2.5". Exhaust System Sound: Moderate. The PRO Series...$834.99 - $859.99
- MBRP®Pro Series™ 304 SS DPF-Back Exhaust System with Single Side ExitGMC Sierra 2500 HD / 3500 HD Double Cab / Crew Cab Diesel 2021, Pro Series™ 304 SS DPF-Back Exhaust System with Single Side Exit by MBRP®. Exhaust System Type: DPF-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 4"....$464.99
- MBRP®Pro Series™ 304 SS Street Version Cat-Back Exhaust System with Single Side ExitGMC Sierra 2500 HD / 3500 HD 2021, Pro Series™ 304 SS Street Version Cat-Back Exhaust System with Single Side Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 4". Exhaust System...$954.99
- Borla®Touring™ 304 SS Cat-Back Exhaust System with Quad Rear ExitGMC Sierra 2021, Touring™ 304 SS Cat-Back Exhaust System with Quad Rear Exit by Borla®. The product is un-polished. Tip style may vary. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Exhaust System Sound: Mild /...$1,552.99 - $2,356.99
- Borla®Touring™ 304 SS Cat-Back Exhaust System with Single Side ExitGMC Sierra Crew Cab 5.3L with Short Bed, Side Exit Exhaust 2021, Touring™ 304 SS Cat-Back Exhaust System with Single Side Exit by Borla®. The product is un-polished. Tip style may vary. Exhaust System Type: Cat-Back. Exhaust Tubing...$1,016.99 - $1,045.99
- Borla®Touring™ 304 SS Cat-Back Exhaust System with Split Rear ExitGMC Sierra 2021, Touring™ 304 SS Cat-Back Exhaust System with Split Rear Exit by Borla®. The product is un-polished. Tip style may vary. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Exhaust System Sound: Mild /...$1,311.99 - $1,418.99
- Borla®S-Type™ T304 Stainless Steel Round Exhaust MufflerGMC Sierra 6.2L 2021, S-Type™ T304 Stainless Steel Round Exhaust Muffler by Borla®. Muffler Inlet Diameter: 3.5". Muffler Outlet Diameter: 3.5". Muffler Sound: Aggressive / Loud. Muffler Configuration: Center - Center. Get increased...$211.99
- MBRP®Black Series™ Aluminized Steel Cat-Back Exhaust System with Dual Side ExitGMC Sierra 4.3L / 5.3L 2021, Black Series™ Aluminized Steel Cat-Back Exhaust System with Dual Side Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Aluminized Steel. Main Tubing Diameter: 3". Exhaust System...$654.99
- MBRP®Black Series™ Aluminized Steel Cat-Back Exhaust System with Single Side ExitGMC Sierra 4.3L / 5.3L 2021, Black Series™ Aluminized Steel Cat-Back Exhaust System with Single Side Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Aluminized Steel. Main Tubing Diameter: 3". Exhaust System...$654.99
- Flowmaster®Outlaw™ 409 SS Cat-Back Exhaust System with Split Rear/Side ExitGMC Sierra 82.2" Bed Crew Cab 158.9" Wheelbase Gas 2021, Outlaw™ 409 SS Cat-Back Exhaust System with Split Rear/Side Exit by Flowmaster®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 3.5" to...$850.95
- Pypes®409 SS Cat-Back Exhaust System with Split Rear ExitGMC Sierra 2021, 409 SS Cat-Back Exhaust System with Split Rear Exit by Pypes®. With 3" Intermediate and 2.5 in Tail Pipe. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 409 SS. Exhaust System Sound: Aggressive / Loud. Get a...$611.75 - $612.75
- Pypes®409 SS Cat-Back Exhaust System with Split Rear ExitGMC Sierra 2021, 409 SS Cat-Back Exhaust System with Split Rear Exit by Pypes®. With 3" Intermediate and 2.5 in Tail Pipe. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 409 SS. Exhaust System Sound: Aggressive / Loud. Get a...$611.75 - $612.75
- MBRP®Armor Pro™ 304 SS Cat-Back Exhaust System with Quad Rear ExitGMC Sierra 6.2L 2021, Armor Pro™ 304 SS Cat-Back Exhaust System with Quad Rear Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 3" / 2.5". Exhaust System Sound: Moderate. The MBRP...$1,154.99
- MBRP®Armor Pro™ 304 SS Cat-Back Exhaust System with Single Side ExitGMC Sierra 2.7L 2021, Armor Pro™ 304 SS Cat-Back Exhaust System with Single Side Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 3". Exhaust System Sound: Moderate. The MBRP Armor...$849.99
- MBRP®Armor Pro™ 409 SS DPF-Back Exhaust System with Single Side ExitGMC Sierra 2500 HD / 3500 HD Double Cab / Crew Cab Diesel 2021, Armor Pro™ 409 SS DPF-Back Exhaust System with Single Side Exit by MBRP®. Exhaust System Type: DPF-Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 5"....$534.99
- JBA®Cat4ward Short Tube Exhaust HeadersGMC Sierra D / L Engine VIN Character 2021, Cat4ward Short Tube Exhaust Headers by JBA®. Primary Tubing Diameter: 1.625". Color: Silver. Header Style: Short Tube. JBA shorty headers are one of the best performance upgrades available for...Mandrel-bent stainless steel primary tubesPatented JBA Firecone® collector$632.95 - $813.95
- Flowmaster®Outlaw™ Extreme 409 SS Cat-Back Exhaust System with Single Rear ExitGMC Sierra 5.3L 2021, Outlaw™ Extreme 409 SS Cat-Back Exhaust System with Single Rear Exit by Flowmaster®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 3". Exhaust System Sound: Aggressive /...$348.95
- AERO Exhaust®Turbine XL Series Round Performance Exhaust Muffler with Integrated ResonatorGMC Sierra 2021, Turbine XL Series Round Performance Exhaust Muffler with Integrated Resonator by AERO Exhaust®. Muffler Body Length: 20". Muffler Overall Length: 26". Muffler Sound: Moderate. Muffler Configuration: Center - Center. The...$169.99 - $173.99
- Eastern Catalytic®ECO GM Direct Fit Catalytic ConverterGMC Sierra 4.3L / 5.3L with California Emission / Federal Emission 2021, ECO GM Catalytic Converter by Eastern Catalytic®. Converter Configuration: Direct Fit. Position: Center. With 4 O2 Sensor Ports. Catalytic Converter Overall...$583.94
- aFe®Gemini XV™ 304 SS Cat-Back Exhaust System with Quad Rear ExitGMC Sierra 5.3L Gas 2021, Gemini XV™ 304 SS Cat-Back Exhaust System with Quad Rear Exit by aFe®. With Electronically Controlled Valve Before the Exhaust Muffler to Quickly Switch Between Mild and Aggressive with the Push of a Button....$1,345.00 - $1,483.00
- aFe®Gemini XV™ 304 SS Cat-Back Exhaust System with Split Rear ExitGMC Sierra 2021, Gemini XV™ 304 SS Cat-Back Exhaust System with Split Rear Exit by aFe®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Exhaust System Sound: Aggressive / Loud. This exhaust system is constructed of 3"...$1,345.00 - $1,802.00
- ACDelco®GM Original Equipment™ Exhaust ManifoldGMC Sierra 2021, GM Original Equipment™ Exhaust Manifold by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$65.68 - $91.94
- MagnaFlow®Stainless Steel Round Direct-Fit Satin Gray Exhaust Muffler KitGMC Sierra 4.3L / 5.3L 2021, Stainless Steel Round Direct-Fit Satin Gray Exhaust Muffler Kit by MagnaFlow®. Muffler Sound: Moderate. Muffler Configuration: Center - Center. MagnaFlow D-FIT kits replace the restrictive factory muffler,...$201.00
- aFe®Apollo GT Series 409 SS MufflerGMC Sierra 6.2L with single valve 2021, Apollo GT Series 409 SS Muffler by aFe®. Muffler Inlet Diameter: 3". Muffler Outlet Diameter: 3". Muffler Sound: Moderate. Muffler Configuration: Center - Offset. Upgrade your factory muffler...$213.00
- MBRP®Armor BLK™ Aluminized Steel Cat-Back Exhaust System with Single Side ExitGMC Sierra 2.7L 2021, Armor BLK™ Aluminized Steel Cat-Back Exhaust System with Single Side Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Aluminized Steel. Main Tubing Diameter: 3". Exhaust System Sound:...$649.99
- MBRP®Armor BLK™ Aluminized Steel DPF-Back Exhaust System with Single Side ExitGMC Sierra 2500 HD / 3500 HD Double Cab / Crew Cab Diesel 2021, Armor BLK™ Aluminized Steel DPF-Back Exhaust System with Single Side Exit by MBRP®. Exhaust System Type: DPF-Back. Exhaust Tubing Material: Aluminized Steel. Main Tubing...$489.99
2021 GMC Sierra Exhaust Reviews
5 reviews
I Would Definitely Buy Again
SLP® - Loud Mouth™ Stainless Steel Round Bullet-Type Silver Exhaust Resonator (2.5" Center ID, 2.5" Center OD, 14" Length)Posted by Robert (Monroe, WI) / November 20, 20222000 Dodge Dakota