The Large Bore-HD down pipe upgrade kit is constructed of mandrel bent 409 stainless steel with OE style hangers and clamps. This 4 Inch 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. All aFe exhaust systems are engineered and manufactured in our Corona, California facility.

Features and Benefits:

• 4 Inch 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

Details:

• Color: Raw
• Emission Code: 1
• Finish: Natural
• Fuel Type: Diesel
• Inlet Inside Diameter: 4 Inch
• Liter: 6.4 Liter
• Main Piping Diameter: 4 Inch
• Material: 409 Stainless Steel
• Product Grade: Performance
• Quantity: Sold individually.
• Series: Large Bore-HD
• System Style: Downpipe
• Warranty: 2 Year

Applications:

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