aFe Large Bore-HD 4 IN 409 Stainless Steel Downpipe

The Large Bore-HD down pipe upgrade kit is constructed of mandrel bent 409 stainless steel with OE style hangers and clamps. This 4" down pipe provides maximum flow for increased horsepower, torque and throttle response. The increased air flow also lowers EGT's and helps improve MPG. All hardware and components are included for a no-trouble installation._x000D_ All aFe exhaust systems are engineered and manufactured in our Corona, California facility.

• 4 IN Mandrel Bent Stainless Steel Tubing
• Free Flow System
• Increased Horsepower And Torque
• Increased flow
• Increased MPG
• Race Only Product
• Solely For Competition
• 2 Year Limited Warranty

Application: Ford Diesel Trucks 08-10 V8-6.4L (td)