average cost of dual exhaust
1 However, for an average, professional dual exhaust setup, plan on budgeting around $300 to $600 to have the job done. 2  For instance, JEGS, an Ohio-based auto parts supplier, offers three Header-Back Dual Exhaust Kits options. 3  The Header-Back Dual 2-1/2â³ Exhaust Kits With Mufflers cost $209 to $535. This is the price for the kits only and will not include the professional installation price. 2  However, for an average, professional dual exhaust setup, plan on budgeting around $300 to $600 to have the job done. 3  For instance, JEGS, an Ohio-based auto parts supplier, offers three Header-Back Dual Exhaust Kits options.