Collection: 2020-2026 GMC Sierra 3500HD AxleBack Exhausts

Axle-back exhaust systems guaranteed to fit your 2020-2026 GMC Sierra 3500HD. Bolt-on kits from Borla, MagnaFlow, Flowmaster, and MBRP in stainless steel, with single and dual-tip configurations to clear the factory hitch and dually fenders.

Will an axle-back exhaust throw a check engine light or affect emissions? No. Axle-back systems replace only the muffler and tailpipe behind the rear axle, leaving catalytic converters and O2 sensors untouched, so emissions compliance and ECU operation stay factory.

Verified fitment on every listing, no guesswork at checkout.