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40 Cal / 50 Cal Downpipe Back Exhaust for 2011 to 2015 GM Duramax 6.6L
This downpipe back race exhaust allows for the removal of the catalytic converter and the DPF filter from the exhaust system for off-road use. Does not fit the late model 2015's with a 3 bolt flange. 
 
Available in 40 Cal 4" or 50 Cal 5" sizes.
 
*Will not fit Cab & Chassis trucks.
 
*Off-road use only. Custom tuning is required*

GM Duramax 6.6L - 40 Cal / 50 Cal Downpipe Back Exhaust (2011-2015)

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