Cat-Back Exhaust for 2025 GMC Sierra 2500 HD
12 parts that fit, every brand, real ship dates.
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12 parts that fit, every brand, real ship dates.
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MBRPMBRP 2020 Chevrolet/GMC 2500/3500 HD Silverado/Sierra 6.6L V8 Installer Series Exhaust - Aluminum
Regular price $594.99 USDRegular price List$734.99 USDSale price $594.99 USDIn stockFree shippingPay over time with Shop PaySale -
MBRPMBRP 2020 Chevrolet/GMC 2500/3500 HD Silverado/Sierra 6.6L V8 T304 Pro Series Performance Exhaust
Regular price $1,109.99 USDRegular price List$1,371.16 USDSale price $1,109.99 USDIn stockFree shippingPay over time with Shop PaySale -
MBRPMBRP 2020+ GMC/Chevy 2500/3500 6.6L Duramax 4in Mand Bent Tubing Pro-Ser Cat Back Single Side - Blk
Regular price $564.99 USDRegular price List$697.93 USDSale price $564.99 USDIn stockFree shippingPay over time with Shop PaySale -
Magnaflow
MagnaFlow 2024+ Chevy Silverado 2500HD/3500HD Pro Series Filter-Back Performance Exhaust
Regular price $1,118.00 USDRegular price List -
Magnaflow
MagnaFlow 2024+ Chevy Silverado 2500HD/3500HD Black Series Filter-Back Performance Exhaust
Regular price $1,229.00 USDRegular price List -
Magnaflow
MagnaFlow 2022+ GM 2500/3500HD 6.6L Gas Single Passenger Side Rear Exit Cat-Back Exhaust
Regular price $1,381.00 USDRegular price List -
aFeaFe Apollo GT Series 3in 409SS Cat-Back Exhaust w/ Polished Tip 2020 GM 2500/3500HD V8 6.6L L8T
Regular price $704.00 USDRegular price List$880.00 USDSale price $704.00 USDMade to orderFree shippingPay over time with Shop PaySale -
aFe
aFe Apollo GT Series 3in 409SS Cat-Back Exhaust w/ Black Tip 2020 GM 2500/3500HD V8 6.6L L8T
Regular price $773.00 USDRegular price List$966.25 USDSale price $773.00 USDMade to orderFree shippingPay over time with Shop PaySale -
Flowmaster
Flowmaster 20-25 GM 2500HD 6.6L CCB Outlaw Cat-Back Exhaust System
Regular price $1,049.95 USDRegular price List$1,181.95 USDSale price $1,049.95 USDIn stockFree shippingPay over time with Shop PaySale -
Flowmaster
Flowmaster 20-25 GM 2500/3500HD 6.6L FlowFX Cat-Back Exhaust System
Regular price $749.95 USDRegular price List$843.95 USDSale price $749.95 USDShips from manufacturerFree shippingPay over time with Shop PaySale -
Flowmaster
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Regular price $1,117.95 USDRegular price List$1,257.95 USDSale price $1,117.95 USDIn stockFree shippingPay over time with Shop PaySale -
Flowmaster
Flowmaster 20-25 GM 2500HD 6.6L CCB FlowFX DOS Exhaust System
Regular price $949.95 USDRegular price List$1,068.95 USDSale price $949.95 USDShips from manufacturerFree shippingPay over time with Shop PaySale
2025 GMC Sierra 2500 HD cat-back exhaust systems: questions and answers
What cat-back exhaust systems fit the 2025 GMC Sierra 2500 HD?
12 cat-back exhaust systems here are listed by their manufacturers for the 2025 GMC Sierra 2500 HD, from 4 brands including Flowmaster, Magnaflow, MBRP, aFe, priced from $564 to $1,381.
Which ones can ship to California?
All 12 can ship to a California address (no CARB restriction).
Which ones ship fastest?
7 are in stock and ship in 1-2 business days. Every other part shows its ship date on its page before you order.
How loud are they?
By the manufacturers' own sound ratings: 2 aggressive, 2 moderate. Use the Sound filter at the top of the page. Parts without a rating are ones whose manufacturer does not rate the series.