Heavy/Medium Duty Exhaust

For class 4-6 trucks, Grand Rock has introduced a line of exhaust components covering popular Chevy/GMC, Ford, Freightliner, International, and Kenworth applications. Click on the .pdf file to view our Medium-Duty catalog online.


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Replacing your old OE truck exhaust pipe can be expensive! Search Grand Rock's extensive inventory of heavy duty truck replacement parts and find the part you need for any major brand OE system. New truck, old truck or custom truck, we have what you need! Click the links below to get started.