MACH Force-XP 2-1/2 IN 304 Stainless Steel Cat-Back Exhaust w/ Polished Tips aFe MACH Force-Xp 2.5in 304 SS Cat-Back Exhaust w/ Polished Tips 01-06 BMW M3 Cat-Back Exhaust Unleash power and sound while improving the looks on your M3 Coupe with this MACH Force-Xp cat back system by aFe POWER. The larger diameter, mandrel-bent tubing along with high-flow stainless steel mufflers optimize the sound and looks of your vehicle. This 100% hand TIG-welded system offers proven the quality and durability found in aFe POWER products, and is finished off with four massive 3" stainless steel exhaust tips with laser-etched logos. MACH Force-XP 2-1/2 IN 304 Stainless Steel Cat-Back Exhaust w/ Polished Tips BMW M3 (E46) 01-06 L6-3.2L S54 2-1/2" Mandrel-Bent 304 Stainless Steel Tubing for Improved Performance and Rust-Resistant Finish X-Pipe Balance Tube Helps Minimize Drone While Increasing Performance 100% Hand TIG-Welded for Race Proven Strength and Durability Quad, Rear-Exit 3", Angle-Cut, Stainless Steel Exhaust Tips Dual High Flow Mufflers Deliver an Aggressive Sound MACH Force-Xp Cat-Back Exhaust System