aFe MACHForce XP 3in to 2.5in 304 SS Axle-Back Exhaust w/ Polished Tips 14-16 BMW M235i

Performance Gains: This system produced gains of up to +11 HP and +15 lbs. x Ft. TQ., as measured on our in-house dyno.3" - 2-1/2" 304 Stainless Steel Construction: This axle-back exhaust system is constructed of 3" - 2-1/2" mandrel-bent 304 stainless steel tubing for maximum strength and durability.High-Flow Stainless Steel Black Muffler: This system features a high-flow stainless steel black muffler, producing a mild sound. The muffler has a black finish for ultimate corrosion resistance.Dual 4" Diameter Polished Exhaust Tips: Finishing off this exhaust system are dual 4" diameter polished 304 stainless steel clamp-on exhaust tips. The tips features a laser etched aFe POWER logo for a unique style.Installation: Utilizing factory style hangers this system mounts directly to factory mounting locations for a hassle-free installation. Some cutting required.Exhaust Valve: This axle-back exhaust system incorporates a factory style exhaust valve which uses the factory exhaust valve motors (