2021 GMC Sierra Exhaust Kits
Select Your Submodel
- Borla®S-Type™ 304 SS Cat-Back Exhaust System with Split Rear ExitGMC Sierra 2021, S-Type™ 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: Aggressive /...$1,205.99 - $1,655.99
- MBRP®Installer Series™ Aluminized Steel Cat-Back Exhaust System with Single Side ExitGMC Sierra 2021, Installer Series™ Aluminized Steel Cat-Back Exhaust System with Single Side Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Aluminized Steel. Made of 100% heavy gauge aluminized steel MBRP...$399.99 - $514.99
- 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,...$732.69 - $786.73$814.10 - $874.14Save 10%
- 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
- MBRP®XP Series™ 409 SS Cat-Back Exhaust System with Split Rear ExitGMC Sierra 5.3L 2021, XP Series™ 409 SS Cat-Back Exhaust System with Split Rear Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 2.5". Exhaust System Sound: Moderate. The XP series...$619.99
- Borla®ATAK™ 304 SS Cat-Back Exhaust System with Split Rear ExitGMC Sierra 147.4" Wheelbase 6.2L 2021, ATAK™ 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. Main Tubing...$1,399.99
- MBRP®Installer Series™ Aluminized Steel Cat-Back Exhaust System with Dual Side ExitGMC Sierra 4.3L / 5.3L 2021, Installer 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...$494.99
- MBRP®Installer Series™ Aluminized Steel Cat-Back Exhaust System with Split Rear ExitGMC Sierra 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 Sound:...$464.99 - $474.99
- 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
- Borla®S-Type™ 304 SS Cat-Back Exhaust System with Quad Rear ExitGMC Sierra 2021, S-Type™ 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: Aggressive /...$1,611.99 - $2,530.99
- Borla®S-Type™ 304 SS Cat-Back Exhaust System with Single Side ExitGMC Sierra 2021, S-Type™ 304 SS Cat-Back Exhaust System with Single Side Exit by Borla®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Exhaust System Sound: Aggressive / Loud. When you want the best performing, best...$1,016.99 - $1,323.99
- 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...$709.28 - $732.69$762.02 - $814.10Save up to 10%
- 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...$696.74$748.57Save $51.83 (7%)
- 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...$693.93$771.03Save $77.10 (10%)
- 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...$827.92 - $837.85$889.51 - $930.94Save up to 10%
- 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...$827.92$889.51Save $61.59 (7%)
- 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
- 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
- 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
- MagnaFlow®MagnaFlow Series™ Stainless Steel Cat-Back Exhaust System with Split Side ExitGMC Sierra 2021, MagnaFlow Series™ Stainless Steel Cat-Back Exhaust System with Split Side Exit by MagnaFlow®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Exhaust System Sound: Moderate. MagnaFlow systems...$1,225.00 - $1,436.00
- Borla®ATAK™ 304 SS Cat-Back Exhaust System with Quad Rear ExitGMC Sierra 147.4" Wheelbase 6.2L 2021, ATAK™ 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. Main Tubing...$1,698.99 - $2,346.99
- 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
- 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