Collection: 2020-2026 GMC Sierra 2500HD CatBack Exhausts

Catback exhaust systems guaranteed to fit your 2020-2026 GMC Sierra 2500HD. Single and dual-outlet configurations from MBRP, Borla, Flowmaster, and AFE in 304 stainless and aluminized steel, sized for the 6.6L gas L8T and 6.6L Duramax diesel.

Will a catback exhaust trigger a check engine light or affect emissions? No. These systems install behind the catalytic converter, leaving all factory emissions equipment intact and keeping the ECU happy in all 50 states.

Verified fitment for your Sierra 2500HD, no guesswork at checkout.