Looking for aftermarket parts to modify or upgrade your 2023 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 2023 GMC Sierra 2500 HD in AT4 to SLT trim we have you covered. We have 11 catback available to mod your Sierra 2500 HD. All parts have free shipping to the Continental US 48 States.
 IN STOCK - DROPSHIPS 49-44122-BThis cat-back exhaust system is constructed of 4" mandrel-bent 409 stainless steel tubing for maximum strength and durability. This system features a high-flow 409 stainless steel muffler, producing a deep sound. Finishing off this exhaust system is a 5" diameter black 409 stainless steel intercoole... aFe Apollo GT Series 3in 409SS Cat-Back Exhaust w/ Black Tip 2020 GM 2500/3500HD V8 6.6L L8T 2020-2023 GMC Sierra 2500 HD AT4 / Denali / SLE / SLT 2022-2023 GMC Sierra 2500 HD Pro $548.63 SALE |
 OUT OF STOCK 49-44122-PThis cat-back exhaust system is constructed of 4" mandrel-bent 409 stainless steel tubing for maximum strength and durability. This system features a high-flow 409 stainless steel muffler, producing a deep sound. Finishing off this exhaust system is a 5" diameter polished 409 stainless steel interco... aFe Apollo GT Series 3in 409SS Cat-Back Exhaust w/ Polished Tip 2020 GM 2500/3500HD V8 6.6L L8T 2020-2023 GMC Sierra 2500 HD AT4 / Denali / SLE / SLT 2022-2023 GMC Sierra 2500 HD Pro $499.13 SALE |
 IN STOCK 49-44123-BThis cat-back exhaust system is constructed of 4" mandrel-bent 409 stainless steel tubing for maximum strength and durability. This system features a high-flow 409 stainless steel muffler, producing a deep sound. Finishing off this exhaust system is a 5" diameter black 409 stainless steel intercoole... aFe Apollo GT Series 4in 409SS Cat-Back 20-21 GM 2500/3500HD V8-6.6L L8T - Black Tip 2020-2023 GMC Sierra 2500 HD AT4 / Denali / SLE / SLT 2022-2023 GMC Sierra 2500 HD Pro $603.90 SALE |
 IN STOCK 49-44125-PThis DPF-back exhaust system is constructed of 5" mandrel-bent 409 stainless steel tubing for maximum strength and durability. Finishing off this exhaust system is a 6" diameter polished 304 stainless steel intercooled clamp-on exhaust tip. The tip features an aFe POWER logo plate riveted on for a u... aFe Large Bore-HD 5 IN 409 SS DPF-Back Exhaust System w/Polished Tip 20-21 GM Truck V8-6.6L 2020-2024 GMC Sierra 2500 HD AT4 / Denali / SLE / SLT 2022-2024 GMC Sierra 2500 HD Pro $453.75 SALE |
 SHIPS FROM MANUFACTURER 140833Borla 20-22 Chevrolet/GMC Silverado/Sierra 6.6L T-304 SS Cat-Back S-Type Exhaust - Brushed 2020-2024 GMC Sierra 2500 HD AT4 / Denali / SLE / SLT 2022-2024 GMC Sierra 2500 HD Pro $1,233.99 |
 SHIPS FROM MANUFACTURER 140833BCBorla 20-22 Chevrolet/GMC Silverado/Sierra 6.6L T-304 SS Cat-Back S-Type Exhaust - Brushed 2020-2024 GMC Sierra 2500 HD AT4 / Denali / SLE / SLT 2022-2024 GMC Sierra 2500 HD Pro $1,266.99 |
 IN STOCK - LOW 65713BDon't waste a split second! The Black Elite displays performance and style by giving you the ultimate choice where there's no need to decide. Take on adventure with the Black Elite Split Rear. Each T-304 stainless tip is offered with a premium black ceramic finish applied with Gibson's formulated pr... Gibson 20-21 Chevy Silverado 6.6L 2.5in Cat-Back Dual Split Exhaust System Stainless - Black Elite 2022-2023 GMC Sierra 2500 HD Denali 2023-2023 GMC Sierra 2500 HD AT4 / Pro / SLE / SLT $715.63 |
 IN STOCK - LOW 65714BThe Black Elite product line truly displays Gibson's commitment to dominating performance and style. Each T-304 stainless tip is offered with a premium black finish applied with Gibson's formulated process exclusive only to the Black Elite. For increased style and Performance, the series pushes the ... Gibson 20-21 Chevy Silverado 2500HD 6.6L 2.5in Cat-Back Dual Extreme Exhaust - Black Elite 2022-2023 GMC Sierra 2500 HD Denali 2023-2023 GMC Sierra 2500 HD AT4 / Pro / SLE / SLT $715.63 |
 SHIPS FROM MANUFACTURER 616517BThe Black Elite product line truly displays Gibson's commitment to dominating performance and style. Each T-304 stainless tip is offered with a premium black finish applied with Gibson's formulated process exclusive only to the Black Elite. For increased style and Performance, the series pushes the ... Gibson 20-21 GMC Sierra 2500HD/3500HD 6.6L Cat-Back Single Exhaust System Stainless - Black Elite 2022-2023 GMC Sierra 2500 HD Denali 2023-2023 GMC Sierra 2500 HD AT4 / Pro / SLE / SLT $623.24 |
 IN STOCK 17870The PRO DPF Series has lifetime backed stainless steel construction, a muffler-less design and mirror polished welded intercooled tips. The best value system with a no hassle emissions legal design.... MagnaFlow SYS Cat-Back 2017 Chevrolet Silverado 6.6L Diesel Polished Single Wall 6in Tip 2007-2023 GMC Sierra 2500 HD SLE / SLT 2011-2023 GMC Sierra 2500 HD Denali 2020-2023 GMC Sierra 2500 HD AT4 2022-2023 GMC Sierra 2500 HD Pro $839.00 |
 OUT OF STOCK 19524MagnaFlow 2022+ GM 2500/3500HD 6.6L Gas Single Passenger Side Rear Exit Cat-Back Exhaust 2020-2023 GMC Sierra 2500 HD AT4 / Denali / SLE / SLT 2022-2023 GMC Sierra 2500 HD Pro $1,235.00 |