Looking for aftermarket parts to modify or upgrade your 2005 GMC Sierra 2500 HD with catback? At Tunersports.com we carry a huge selection of the top name brand performance catback parts and accessories for your Sierra 2500 HD.
Whether you have a 2005 GMC Sierra 2500 HD in Base to WT trim we have you covered. We have 40 catback available to mod your Sierra 2500 HD. All parts have free shipping to the Continental US 48 States.
 OUT OF STOCK 49-14001The Large Bore HD Performance Cat-Back exhaust features 4" 409 stainless steel tubing with smooth curves and increased size to help remove restriction and keeps exhaust gasses flowing smoothly. The OE style band-clamps and bayonet style hangers make sure this system installs cleanly and easily. Yo... aFe LARGE Bore HD Exhausts Cat-Back SS-409 EXH CB GM Diesel Trucks 01-05 V8-6.6L (td) LB7/LLY 2001-2005 GMC Sierra 2500 HD SLE / SLT 2002-2005 GMC Sierra 2500 HD Base 2003-2005 GMC Sierra 2500 HD WT $559.63 |
 IN STOCK - DROPSHIPS 49-44001The new MACH Force XP exhaust is engineered to perform in the most extreme environments. This system is constructed from mandrel bent 4 in. 409 stainless steel tubing for maximum flow; increased horsepower; increased torque; and lower EGTs. MACH Force XP exhaust systems are the perfect combination o... aFe MACHForce XP Exhausts Cat-Back SS-409 EXH CB GM Diesel Trucks 01-05 V8-6.6L (td) LB7/LLY 2001-2005 GMC Sierra 2500 HD SLE / SLT 2002-2005 GMC Sierra 2500 HD Base 2003-2005 GMC Sierra 2500 HD WT $680.63 |
 SHIPS FROM MANUFACTURER 48632-BStainless constant-diameter pipes and straight-thru muffler nearly doubles flow. Lower exhaust temps. Virtually no backpressure. Rich, throaty sound. Monster exhaust system flows better than stock and virtually eliminates backpressure. The streamlined intermediate pipe(s) and tailpipe are formed of ... Banks Power 02-05 Chevy 6.6L SCLB Monster Exhaust System - SS Single Exhaust w/ Black Tip 2002-2005 GMC Sierra 2500 HD Base / SLE / SLT 2003-2005 GMC Sierra 2500 HD WT $529.00 |
 SHIPS FROM MANUFACTURER 48633-BStainless constant-diameter pipes and straight-thru muffler nearly doubles flow. Lower exhaust temps. Virtually no backpressure. Rich, throaty sound. Monster exhaust system flows better than stock and virtually eliminates backpressure. The streamlined intermediate pipe(s) and tailpipe are formed of ... Banks Power 02-05 Chev 6.6L EC/CCSB Monster Exhaust System - SS Single Exhaust w/ Black Tip 2002-2005 GMC Sierra 2500 HD Base / SLE / SLT 2003-2005 GMC Sierra 2500 HD WT $540.00 |
 SHIPS FROM MANUFACTURER 48634-BStainless constant-diameter pipes and straight-thru muffler nearly doubles flow. Lower exhaust temps. Virtually no backpressure. Rich, throaty sound. Monster exhaust system flows better than stock and virtually eliminates backpressure. The streamlined intermediate pipe(s) and tailpipe are formed of ... Banks Power 02-05 Chevy 6.6L EC/CCLB Monster Exhaust System - SS Single Exhaust w/ Black Tip 2002-2005 GMC Sierra 2500 HD Base / SLE / SLT 2003-2005 GMC Sierra 2500 HD WT $599.00 |
 SHIPS FROM MANUFACTURER 48632Stainless constant-diameter pipes and straight-thru muffler nearly doubles flow. Lower exhaust temps. Virtually no backpressure. Rich, throaty sound. Monster exhaust system flows better than stock and virtually eliminates backpressure. The streamlined intermediate pipe(s) and tailpipe are formed of ... Banks Power 02-05 Chevy 6.6L SCLB Monster Exhaust System - SS Single Exhaust w/ Chrome Tip 2002-2005 GMC Sierra 2500 HD Base / SLE / SLT 2003-2005 GMC Sierra 2500 HD WT $529.00 |
 SHIPS FROM MANUFACTURER 48633Stainless constant-diameter pipes and straight-thru muffler nearly doubles flow. Lower exhaust temps. Virtually no backpressure. Rich, throaty sound. Monster exhaust system flows better than stock and virtually eliminates backpressure. The streamlined intermediate pipe(s) and tailpipe are formed of ... Banks Power 02-05 Chevy 6.6L EC/CCSB Monster Exhaust System - SS Single Exhaust w/ Chrome Tip 2002-2005 GMC Sierra 2500 HD Base / SLE / SLT 2003-2005 GMC Sierra 2500 HD WT $540.00 |
 SHIPS FROM MANUFACTURER 48634Stainless constant-diameter pipes and straight-thru muffler nearly doubles flow. Lower exhaust temps. Virtually no backpressure. Rich, throaty sound. Monster exhaust system flows better than stock and virtually eliminates backpressure. The streamlined intermediate pipe(s) and tailpipe are formed of ... Banks Power 02-05 Chevy 6.6L EC/CCLB Monster Exhaust System - SS Single Exhaust w/ Chrome Tip 2002-2005 GMC Sierra 2500 HD Base / SLE / SLT 2003-2005 GMC Sierra 2500 HD WT $599.00 |
 SHIPS FROM MANUFACTURER 48769Monster Performance And Modes price. Improves airflow up to 122 percent. Banks new Monster Sport Exhaust is one cool cat back system! And its low price. Thats way cool. The system slashes backpressure; increases exhaust flow; improves fuel economy and delivers extra power to your rear wheels. Ex... Banks Power 01-05 Chevy 6.6L SCLB Monster Sport Exhaust System 2001-2005 GMC Sierra 2500 HD SLE / SLT 2002-2005 GMC Sierra 2500 HD Base 2003-2005 GMC Sierra 2500 HD WT $429.00 |
 SHIPS FROM MANUFACTURER 48770Monster Performance And Modes price. Improves airflow up to 122 percent. Banks new Monster Sport Exhaust is one cool cat back system! And its low price. Thats way cool. The system slashes backpressure; increases exhaust flow; improves fuel economy and delivers extra power to your rear wheels. Ex... Banks Power 01-05 Chev 6.6L Ec/CCSB Monster Sport Exhaust System 2001-2005 GMC Sierra 2500 HD SLE / SLT 2002-2005 GMC Sierra 2500 HD Base 2003-2005 GMC Sierra 2500 HD WT $449.00 |
 SHIPS FROM MANUFACTURER 48771Monster Performance And Modes price. Improves airflow up to 122 percent. Banks new Monster Sport Exhaust is one cool cat back system! And its low price. Thats way cool. The system slashes backpressure; increases exhaust flow; improves fuel economy and delivers extra power to your rear wheels. Ex... Banks Power 01-05 Chevy 6.6L Ec/Cclb Monster Sport Exhaust System 2001-2005 GMC Sierra 2500 HD SLE / SLT 2002-2005 GMC Sierra 2500 HD Base 2003-2005 GMC Sierra 2500 HD WT $489.00 |
 IN STOCK 24292dB by CORSAs patented Reflective Sound Cancellation® (RSC) Technology allows acoustic engineers to create a drone free exhaust sound, and a deep aggressive rumble. Computerized; mandrel bent; straight through design for maximum airflow which improves fuel economy and performance.... Corsa/dB 03-06 Chevrolet Silverado Ext. Cab/Short Bed 2500 6.0L V8 Polished Sport Cat-Back Exhaust 2003-2005 GMC Sierra 2500 HD Base 2003-2006 GMC Sierra 2500 HD SLE / SLT 2004-2006 GMC Sierra 2500 HD WT $916.96 |
 OUT OF STOCK 24296dB by CORSAs patented Reflective Sound Cancellation® (RSC) Technology allows acoustic engineers to create a drone free exhaust sound, and a deep aggressive rumble. Computerized; mandrel bent; straight through design for maximum airflow which improves fuel economy and performance.... Corsa/dB 02-06 Chevrolet Silverado Crew Cab/Short Bed 2500 6.0L V8 Polished Sport Cat-Back Exhaust 2003-2005 GMC Sierra 2500 HD Base 2003-2006 GMC Sierra 2500 HD SLE / SLT 2004-2006 GMC Sierra 2500 HD WT $916.96 |
 IN STOCK K4110ADiamond Eye Manufacturing is recognized as being one of the most modern and progressive companies in eastern Oregon. The company has invested heavily to incorporate several CNC mandrel bending machines and support equipment, Enabling us to produce the finest exhaust components in today's marketplace... Diamond Eye KIT 4in CB SGL AL CHEVY/GMC 6.6L 2500/3500 01-05 2001-2005 GMC Sierra 2500 HD SLE / SLT 2002-2005 GMC Sierra 2500 HD Base 2003-2005 GMC Sierra 2500 HD WT $379.60 |
 IN STOCK K4110A-RPDiamond Eye Manufacturing is recognized as being one of the most modern and progressive companies in eastern Oregon. The company has invested heavily to incorporate several CNC mandrel bending machines and support equipment, Enabling us to produce the finest exhaust components in today's marketplace... Diamond Eye KIT 4in CB MFLR RPLCMENT PIPE SGL AL: 01-05 CHEVY/GMC 6.6L 2500/3500 2001-2005 GMC Sierra 2500 HD SLE / SLT 2002-2005 GMC Sierra 2500 HD Base 2003-2005 GMC Sierra 2500 HD WT $324.50 |
 OUT OF STOCK K4120ADiamond Eye Manufacturing is recognized as being one of the most modern and progressive companies in eastern Oregon. The company has invested heavily to incorporate several CNC mandrel bending machines and support equipment, Enabling us to produce the finest exhaust components in today's marketplace... Diamond Eye KIT 4in CBSGL w/ TDP AL 04-05 Chevy/GMC 6.6L Duramax 2500/3500 2004-2005 GMC Sierra 2500 HD Base / SLE / SLT / WT $530.78 |
 OUT OF STOCK K4120A-RPDiamond Eye Manufacturing is recognized as being one of the most modern and progressive companies in eastern Oregon. The company has invested heavily to incorporate several CNC mandrel bending machines and support equipment, Enabling us to produce the finest exhaust components in today's marketplace... Diamond Eye KIT 4in CB MRP SGL w/ TDP AL 04-05 Chevy/GMC 6.6L Duramax 2500/3500 2004-2005 GMC Sierra 2500 HD Base / SLE / SLT / WT $475.89 |
 OUT OF STOCK K4110SDiamond Eye Manufacturing is recognized as being one of the most modern and progressive companies in eastern Oregon. The company has invested heavily to incorporate several CNC mandrel bending machines and support equipment, Enabling us to produce the finest exhaust components in today's marketplace... Diamond Eye KIT 4in CB SGL SS CHEVY/GMC 6.6L 2500/3500 01-05 2001-2005 GMC Sierra 2500 HD SLE / SLT 2002-2005 GMC Sierra 2500 HD Base 2003-2005 GMC Sierra 2500 HD WT $449.88 |
 IN STOCK - LOW K4110S-RPDiamond Eye Manufacturing is recognized as being one of the most modern and progressive companies in eastern Oregon. The company has invested heavily to incorporate several CNC mandrel bending machines and support equipment, Enabling us to produce the finest exhaust components in today's marketplace... Diamond Eye KIT 4in CB SGL MFLR RPLCMENT PIPE SS 01-05 CHEVY/GMC 6.6L 2500/3500 2001-2005 GMC Sierra 2500 HD SLE / SLT 2002-2005 GMC Sierra 2500 HD Base 2003-2005 GMC Sierra 2500 HD WT $392.94 |
 OUT OF STOCK K4120SDiamond Eye Manufacturing is recognized as being one of the most modern and progressive companies in eastern Oregon. The company has invested heavily to incorporate several CNC mandrel bending machines and support equipment, Enabling us to produce the finest exhaust components in today's marketplace... Diamond Eye KIT 4in CBSGL w/ TDP SS 04-05 Chevy/GMC 6.6L Duramax 2500/3500 2004-2005 GMC Sierra 2500 HD Base / SLE / SLT / WT $600.16 |
 OUT OF STOCK K4120S-RPDiamond Eye Manufacturing is recognized as being one of the most modern and progressive companies in eastern Oregon. The company has invested heavily to incorporate several CNC mandrel bending machines and support equipment, Enabling us to produce the finest exhaust components in today's marketplace... Diamond Eye KIT 4in CB MRP SGL w/ TDP SS 04-05 Chevy/GMC 6.6L Duramax 2500/3500 2004-2005 GMC Sierra 2500 HD Base / SLE / SLT / WT $538.12 |
 SHIPS FROM MANUFACTURER 5009For the extremist who wants to take their truck to the next level, this dual bolt-on Cat back system is for you. This system exists behind the rear tires at an aggressive angle with a powerful exhaust tone. You will gain bold street looks with powerful dyno tuned and tested street performance gains.... Gibson 02-05 Chevrolet Silverado 2500 HD Base 6.0L 2.5in Cat-Back Dual Extreme Exhaust - Aluminized 2002-2005 GMC Sierra 2500 HD Base 2002-2006 GMC Sierra 2500 HD SLE / SLT 2004-2006 GMC Sierra 2500 HD WT $642.99 |
 SHIPS FROM MANUFACTURER 65009For the extremist who wants to take their truck to the next level, this dual bolt-on Cat back system is for you. This system exists behind the rear tires at an aggressive angle with a powerful exhaust tone. You will gain bold street looks with powerful dyno tuned and tested street performance gains.... Gibson 02-05 Chevrolet Silverado 2500 HD Base 6.0L 2.5in Cat-Back Dual Extreme Exhaust - Stainless 2002-2005 GMC Sierra 2500 HD Base 2002-2006 GMC Sierra 2500 HD SLE / SLT 2004-2006 GMC Sierra 2500 HD WT $769.24 |
 SHIPS FROM MANUFACTURER 65014For the extremist who wants to take their truck to the next level, this dual bolt-on Cat back system is for you. This system exists behind the rear tires at an aggressive angle with a powerful exhaust tone. You will gain bold street looks with powerful dyno tuned and tested street performance gains.... Gibson 01-05 Chevrolet Silverado 2500 HD Base 6.0L 2.5in Cat-Back Dual Extreme Exhaust - Stainless 2001-2006 GMC Sierra 2500 HD SLE / SLT 2002-2005 GMC Sierra 2500 HD Base 2004-2006 GMC Sierra 2500 HD WT $769.24 |
 SHIPS FROM MANUFACTURER 65017For the extremist who wants to take their truck to the next level, this dual bolt-on Cat back system is for you. This system exists behind the rear tires at an aggressive angle with a powerful exhaust tone. You will gain bold street looks with powerful dyno tuned and tested street performance gains.... Gibson 01-05 Chevrolet Silverado 2500 HD Base 6.0L 2.5in Cat-Back Dual Extreme Exhaust - Stainless 2001-2006 GMC Sierra 2500 HD SLE / SLT 2002-2005 GMC Sierra 2500 HD Base 2004-2006 GMC Sierra 2500 HD WT $769.24 |