aFe MACH Force-Xp 2-3/4 IN to 2-1/4 IN Stainless Steel Cat-Back Exhaust System (49-46403) 8005 This software upgrade is intended

This software upgrade is intended for enthusiasts aiming to enhance the performance of naturally aspirated BMW models within the specified fitment range

Replace the hoses on your aFe cold air intake system when they wear out with the contents of this kit

installs in ten minutes

Two Axle-Back system options are also available: an aggressive "S"-Type (PN 11750) and a more mellow Touring (PN 11752) - both replace only the over-the-axle pipes

aFe MACH Force-Xp 2-3/4 IN to 2-1/4 IN Stainless Steel Cat-Back Exhaust System (49-46403) 8005 This software upgrade is intendedMach Force XP 409 SS Cat Back Exhaust System with Dual Rear Exit by aFe. With Stainless Steel Flex Pipe. Exhaust System Type: Cat Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 2. 75" to 2. 25". Exhaust System Sound: Aggressive Loud. Get increased exhaust flow, more horsepower and torque, improved performance and lower exhaust gas temperatures with the aFe Mach Force XP Cat Back Exhaust System. aFe dyno tests every system for maximum