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Turbo Back Kits Only

Grand Rock Turbo Back Stack Kits Only (without stacks)


What Truck Do You Have?


Grand Rock Turbo Back Stack Exhaust Kits are High Quality diesel pickup truck stack exhaust systems.  Turbo Back Kits for NON-DPF Ford Powerstroke, Dodge Cummins, GMC Chevy Duramax Stack installation! 

Turbo Back Stack Kits for installing 4 Inch Stacks use all 4 inch clamps, hardware and piping.

 Turbo Back Stack Kits for installing 5, 6, 7 and 8 Inch Stack use 4 inch clamps, hardware, and piping below the bed and expands to 5 inch above the bed- The inlet of the t-pipe is 4 inch, the t-pipe expands to 5 inch above bed, t-pipe, clamps and hardware above bed are 5 inch. Our 5, 6, 7 and 8 inch stacks have 5" OD Base that fits into the t-pipe outlets.  

If you only need to downpipe, midpipe(s) and hardware and have already purchased a Grand Rock Cat Back Bed Kit/Installation Kit, you can order it below.

Questions? Call 715-824-5051 or email


Exhaust Piping made from corrosion-resistant 16-ga. US-made aluminized steel mandrel-bent pipes. *Precise fit, no need to hammer or adjust. *Deburred 1/2" rod hangers, no sharp edges or burrs, (33% thicker) 3/8" wire hangers, *Welded double saddle, flattened bolt hangers won't crush pipe. *Brackets zinc plated to prevent rust. *ACCUSEAL™ clamps join pipes together, won't crush pipes, keeps exhaust joints serviceable. *All tubes are deburred, cleaned, no sharp edges or saw chips.

*Do to shipping size restrictions 48 and 60 Inch Stacks and Turbo Back Kits are only available in the Lower 48 States at this time.