ARH Cadillac CTS-V 2016 & Up Full SystemA. R. H. has what you need to exhaust the beast within. 100% U. S. made long tube 304 S S header systems that are designed to fit great, install easily and produce outstanding horsepower and torque. This includes 3 8" thick flanges with tig welded and hand ported inlets, merge collectors with scavenger spikes, 200 cell metallic substrate cats, OEM style band clamps, Grade 8 hardware and Flat Out Racing Gaskets. Primary sizes available are 1 3 4", 1 7
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