Upgrade the sound, appearance, and exhaust flow of your compatible BMW with the aFe MACH Force-Xp Stainless Steel Cat-Back Exhaust System, part number 49-36334-B. Designed for BMW 340i and 440i models equipped with the turbocharged B58 inline-six engine, this performance exhaust uses a free-flowing transverse muffler to reduce high-pitched tones while producing a deeper, more aggressive exhaust note. The efficient design helps unleash available horsepower and torque while maintaining a refined sound suitable for street driving.
The system is constructed from mandrel-bent, brushed 304 stainless steel tubing for strength, corrosion resistance, and long-term durability. Each section is hand TIG-welded for precise construction, and the high-temperature powder-coated black muffler adds a durable finish with a stamped aFe power logo. A factory-style V-band flange and high-quality band clamps provide a secure, leak-resistant connection with a complete sealing surface. Factory hanger locations help support the system and simplify installation without requiring extensive modifications.
A factory-style exhaust valve is integrated into the cat-back system to help regulate exhaust flow according to throttle position. The valve uses the original factory exhaust valve motor, which is not included with this system. Completing the upgrade are dual gloss black 304 stainless steel exhaust tips featuring laser-etched aFe power logos for a clean, performance-oriented appearance. This system is designed to fit select 2016-2020 BMW 340i, 340i xDrive, 340i GT xDrive, 440i, 440i xDrive, and 440i Gran Coupe models with the B58 engine; verify exact vehicle fitment before ordering.
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