2021 GMC Sierra Exhaust Systems
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MBRP®Installer Series™ Aluminized Steel DPF-Back Exhaust System with Single Side ExitGMC Sierra 2500 HD / 3500 HD Double Cab / Crew Cab Diesel 2021, Installer Series™ Aluminized Steel DPF-Back Exhaust System with Single Side Exit by MBRP®. Exhaust System Type: DPF-Back. Exhaust Tubing Material: Aluminized Steel. Main...$349.99 - Gibson®Extreme Dual™ Stainless Steel Cat-Back Exhaust System with Split Side ExitGMC Sierra 2021, Extreme Dual™ Stainless Steel Cat-Back Exhaust System with Split Side Exit by Gibson®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. When you're ready to take your truck to the next level,...$691.98 - $743.02$814.10 - $874.14Save 15%
- Flowmaster®American Thunder™ 409 SS Cat-Back Exhaust System with Split Rear/Side ExitGMC Sierra 2021, American Thunder™ 409 SS Cat-Back Exhaust System with Split Rear/Side Exit by Flowmaster®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 409 SS. American Thunder gives you the classic AGGRESSIVE or MODERATE...$963.95 - $1,075.95
- Davico®Direct Fit Catalytic ConverterGMC Sierra 2.7L 2021, Catalytic Converter by Davico®. Converter Configuration: Direct Fit. Position: Front. With 2 O2 Sensor Ports. Catalytic Converter Overall Length: 28". This direct-fit catalytic converter by Davico will be a great...$559.17
- MBRP®Installer Series™ Aluminized Steel Cat-Back Exhaust System with Split Rear ExitGMC Sierra 6.2L 2021, Installer Series™ Aluminized Steel Cat-Back Exhaust System with Split Rear Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Aluminized Steel. Main Tubing Diameter: 2.5". Exhaust System...$464.99
- Gibson®Split Rear™ Stainless Steel Cat-Back Exhaust System with Split Rear ExitGMC Sierra Crew Cab 2021, Split Rear™ Stainless Steel Cat-Back Exhaust System with Split Rear Exit by Gibson®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Exhaust System Sound: Aggressive / Loud. Get...$671.17 - $691.98$762.02 - $814.10Save up to 15%
- Gibson®Stainless Steel Cat-Back Exhaust System with Single Side ExitGMC Sierra 2500 HD / 3500 HD 98.2" Bed Crew Cab 2021, Stainless Steel Cat-Back Exhaust System with Single Side Exit by Gibson®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Main Tubing Diameter: 3.5". Exhaust...$659.32$748.57Save $89.25 (12%)
- AERO Exhaust®AR Series 304 Stainless Steel Round Performance Exhaust ResonatorGMC Sierra 5.3L 2021, AR Series 304 Stainless Steel Round Performance Exhaust Resonator by AERO Exhaust®. Resonator Inlet Diameter: 3". Resonator Outlet Diameter: 3". Resonator Body Length: 10". Resonator Overall Length: 14". Resonator...$105.99
- Gibson®Black Elite™ Stainless Steel Cat-Back Exhaust System with Single Side ExitGMC Sierra 2500 HD / 3500 HD 98.2" Bed Crew Cab 2021, Black Elite™ Stainless Steel Cat-Back Exhaust System with Single Side Exit by Gibson®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Main Tubing...$655.37$771.03Save $115.66 (15%)
- Gibson®Black Elite™ Stainless Steel Cat-Back Exhaust System with Split Rear ExitGMC Sierra 2021, Black Elite™ Stainless Steel Cat-Back Exhaust System with Split Rear Exit by Gibson®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. The Black Elite Series product line truly displays...$783.45 - $791.31$889.51 - $930.94Save up to 15%
- Gibson®Black Elite™ Stainless Steel Dual Extreme Cat-Back Exhaust System with Split Side ExitGMC Sierra 2500 HD / 3500 HD 98.2" Bed Crew Cab 2021, Black Elite™ Stainless Steel Dual Extreme Cat-Back Exhaust System with Split Side Exit by Gibson®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Main...$783.45$889.51Save $106.06 (12%)
- AERO Exhaust®Turbine Series Round Performance Exhaust MufflerGMC Sierra 2021, Turbine Series Round Performance Exhaust Muffler by AERO Exhaust®. Muffler Body Length: 14". Muffler Overall Length: 20". Muffler Sound: Aggressive / Loud. Muffler Configuration: Center - Center. The AERO Exhaust...$149.99 - $153.99
- AWE Tuning®0FG™ 304 SS Cat-Back Exhaust System with Quad Rear ExitGMC Sierra with Bumper Cutouts 2021, 0FG™ 304 SS Cat-Back Exhaust System with Quad Rear Exit by AWE Tuning®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 3". Exhaust System Sound: Aggressive /...$1,695.00 - $2,295.00
- AWE Tuning®0FG™ 304 SS Cat-Back Exhaust System with Split Rear ExitGMC Sierra 5.3L with Flat Bumper 2021, 0FG™ 304 SS Cat-Back Exhaust System with Split Rear Exit by AWE Tuning®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 3". Exhaust System Sound: Aggressive...$1,645.00 - $1,745.00
- BBK®Short Tube Exhaust HeadersGMC Sierra 5.3L / 6.2L 2021, Short Tube Exhaust Headers by BBK®. Header Coating: Ceramic. Header Style: Short Tube. Gain 12-15 dyno-proven horsepower at the rear wheels just by bolting on a set of BBK long tube, full length headers....Developed using CAD (Computer Aided Design) softwareCNC mandrel bent tubes to ensure consistent diameter throughout the tubes$549.99 - $599.99
- aFe®Large Bore HD™ 409 SS DPF-Back Exhaust System with Single Side ExitGMC Sierra 3.0L 2021, Large Bore HD™ 409 SS DPF-Back Exhaust System with Single Side Exit by aFe®. Exhaust System Type: DPF-Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 3". Exhaust System Sound: Aggressive / Loud. Get...$585.00 - $645.00
- AERO Exhaust®TR Series 304 Stainless Steel Round Performance Exhaust ResonatorGMC Sierra 5.3L 2021, TR Series 304 Stainless Steel Round Performance Exhaust Resonator by AERO Exhaust®. Resonator Inlet Diameter: 3". Resonator Outlet Diameter: 3". Resonator Sound: Moderate. Resonator Configuration: Center - Center....$92.99 - $136.99
- 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
- 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®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
- 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...$571.75 - $572.75$611.75 - $612.75Save 7%
- 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...$571.75 - $572.75$611.75 - $612.75Save 7%
- 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
- Flowmaster®American Thunder™ 409 SS Cat-Back Exhaust System with Quad Rear ExitGMC Sierra Double Cab / Crew Cab 5.3L Gas with Factory Dual Exhaust Option 2021, American Thunder™ 409 SS Cat-Back Exhaust System with Quad Rear Exit by Flowmaster®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 409 SS. Main...$1,020.95
- 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
- MagnaFlow®MagnaFlow Series™ Stainless Steel Cat-Back Exhaust System with Quad Rear ExitGMC Sierra 2021, MagnaFlow Series™ Stainless Steel Cat-Back Exhaust System with Quad Rear Exit by MagnaFlow®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Exhaust System Sound: Moderate. MagnaFlow systems...$1,817.00 - $1,953.00
- MagnaFlow®MagnaFlow Series™ Stainless Steel Cat-Back Exhaust System with Single Side ExitGMC Sierra 2021, MagnaFlow Series™ Stainless Steel Cat-Back Exhaust System with Single Side Exit by MagnaFlow®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Exhaust System Sound: Moderate. MagnaFlow systems...$1,135.00 - $1,281.00
- MagnaFlow®MagnaFlow Series™ Stainless Steel Cat-Back Exhaust System with Split Rear ExitGMC Sierra 2021, MagnaFlow Series™ Stainless Steel Cat-Back Exhaust System with Split Rear Exit by MagnaFlow®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Exhaust System Sound: Moderate. MagnaFlow systems...$1,252.00 - $1,436.00
2021 GMC Sierra Exhaust Reviews
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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