Exhaust X Pipe 4.00 Inch By 13.00 Inches Long Exhaust Wesdon X Pipe 4.00 INCH Pipe Add an X pipe to CREATE dual exhausts Will increase torque throughout the RPM INCLUDES (1) ONE HEAVY 16 GAGE 4.00 DIA BY OAL 13 INCH LENGTH X PIPE 16 Gage Aluminized Steel