Ford Racing 2013-15 Focus ST Cat-Back Exhaust System (No Drop Ship) Exterior Styling>Car Covers The Aluminum resi construction allows

The Aluminum resi construction allows for greater heat dissipation thereby keeping the shock cooler to reduce fade during aggressive offroad use

High burst strength and holds 28% more torque than typical organic materials

Adds up to 57 hp and 73 lb-ft

The lightweight tubes are computer-designed to achieve maximum power gains while maintaining a perfect fit

if you're looking to keep it stock in the back

Ford Racing 2013-15 Focus ST Cat-Back Exhaust System (No Drop Ship) Exterior Styling>Car Covers The Aluminum resi construction allowsFord Racing Performance Parts brings you the ultimate in high performance with their exhaust systems. All components are made from stainless steel and are produced to Ford Racing specifications. These kits are attractively priced, high quality, and guaranteed to fit and produce world class power and low restriction. Depending on the application and kit, X pipes and hardware are included.