This cat-back exhaust system is constructed of 3 Inch - 2-1/2 Inch mandrel-bent brushed finished 304 stainless steel tubing for maximum strength and durability. This system features high-flow 304 stainless steel mufflers, producing a deep sound. Finishing off this exhaust system are quad 3-1/2 Inch diameter carbon fiber 304 stainless steel clamp-on exhaust tips.

The tips features an aFe Power logo for a unique style. This system produces a deep sound unleashing all available horsepower and torque. Utilizing a factory style flange and hangers this system is a direct bolt-on system, which requires no cutting or modifications for a hassle-free installation.

This cat-back exhaust system uses a heavy duty flex pipe with an internal interlock liner for added strength and durability. A mitered merge x-pipe is used to balance and evenly distribute exhaust pulses traveling through the exhaust system, minimizing exhaust drone and maximizing scavenging. This system incorporates factory style exhaust valves which use the factory exhaust valve motors (not included).

The valves help regulate, direct and control the flow of exhaust gases by opening, closing, or partially obstructing passageways depending on throttle position for maximum performance. State-of-the-art computer-aided design technology is utilized for precise vehicle fitment. 100 percent Tig-Welded for race-proven strength and durability.

Features and Benefits:

• Quad 3-1/2 Inch Diameter Carbon Fiber 304 Stainless Steel Clamp-On Exhaust Tips
• Utilizes Factory Style Flange and Hangers for a Secure Fit
• Includes Factory Style Exhaust Valves (Using Factory Motor, Not Included)
• 100 percent Tig-Welded for Strength and Durability

Details:

• Emission Code: 4
• Exhaust Tip Cut: Slant
• Exhaust Tip Included: Yes
• Exhaust Tip Outlet Size: 4 Inch
• Exhaust Tip Quantity: Dual
• Exhaust Type: Cat-Back
• Exit Location: Rear
• Fuel Type: Mild Hybrid EV-Gas (MHEV)
• Horse Power Increase: 17
• Includes Muffler: Yes
• Liter: 4.0 Liter
• Muffler Finish: Black Powdercoated
• Muffler Included: Yes
• Muffler Material: 409 stainless steel
• Series: Mach Force-Xp
• Sound Level: Moderate
• System Finish: Natural
• System Material: 304 Stainless Steel
• Tip Cut: Slant
• Tip Finish: Black
• Tip Included: Yes
• Tip Material: 409 stainless steel
• Tip Outlet Size: 4 Inch
• Torque Increase: 23 ft-lbs
• Tubing Diameter: 3 to 2-1/2 Inch
• Warranty: 2 Year

Applications:

• Audi RS6 Avant 21-26 V8-4.0L (tt)