aFe MACH Force-Xp 2-3/4 IN to 2-1/4 IN Stainless Steel Cat-Back Exhaust System (49-46403) 8005 Two Axle-Back system options are

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

improves responsiveness

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

Improves your vehicle's handling

With that being said you greatly risk creating an exhaust leak if you decide to re-use your old gasket

aFe MACH Force-Xp 2-3/4 IN to 2-1/4 IN Stainless Steel Cat-Back Exhaust System (49-46403) 8005 Two Axle-Back system options areMach 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