Twisted Steel Down Pipe 3 IN 304 Stainless Steel w/ Cat BMW M3/M4 (F80/82/83) 15-20 L6-3.0L (tt) S55

AFE Power 048-48-36312-1 Features:

If you are looking to improve performance, throttle response, and enhance the sound to your vehicle, aFe POWER Twisted Steel headers is the answer. These headers are designed to increase exhaust velocity and increase usable torque, resulting in a more aggressive throttle response and increased passing power. Tuning may be required depending on application.

• Produces An Astonishing 21 HP And 23 ft./lbs. Of Torque
• Constructed Of 3 in Mandrel-Bent 304 Stainless Steel Tubing
• 100% Hand Welded For Optimal Strength And Durability
• Dual 200 CPSI Catalytic Converters Are Used For Maximum Flow
• Thick Flanges To Ensure A Leak-Free Seal
• Retains All Your Factory Sensors For A Hassle Free Installation