PACESETTER Long Tube Style Chassis Exit; 1-3/4 Inch Diameter Primary Tubes; 3 Inch Diameter Slip Fit Collector; 3/8 Inch Thick Head Flange; For Off-Road Use Only; Painted Black 16 Gauge Carbon Steel. Long Tube Style Chassis Exit; 1-3/4 Inch Diameter Primary Tubes; 3 Inch Diameter Slip Fit Collector; 3/8 Inch Thick Head Flange; For Off-Road Use Only; Painted Black 16 Gauge Carbon Steel Long Tube Style Chassis Exit; 1-3/4 Inch Diameter Primary Tubes; 3 Inch Diameter Slip Fit Collector; 3/8 Inch Thick Head Flange; For Off-Road Use Only; Painted Black 16 Gauge Carbon Steel.