aFe MACH Force-Xp SS Cat-Back Exhaust, Black Tips - 2016-17 BMW 340i/440i F3X

A cat-back exhaust replaces the system from behind the catalytic converters to the tips. aFe's MACH Force-Xp system for the F3X 340i and 440i steps from 3-inch to 2-1/2-inch stainless tubing and uses a transverse muffler that trims the high-pitched tones for a deeper sound. aFe rates it at up to 14 hp and 13 lb-ft of torque.

What you get

• Brushed 304 stainless tubing, mandrel-bent and hand TIG-welded, stepping from 3 to 2-1/2 inches.
• Free-flowing transverse muffler with a high-temperature black powder coat.
• Factory-style exhaust valve that opens and closes with throttle position. It runs off the car's existing valve motor, which is not included.
• Dual 4-inch gloss black tips in 304 stainless with a laser-etched aFe logo.
• Band clamps that seal all the way around each joint.

Good to know

• The system bolts up at the factory mounting points.
• aFe states this exhaust does not need a CARB EO number.

Brand: aFe · Part #: 49-36334-B

Ships from the brand or distributor, usually in 3-7 business days.

• Ships from the brand or distributor, usually in 3–7 business days.
• Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
• Unused parts can be returned within 30 days. Some items are marked no-refund in their description.

Full details are on our shipping and returns page.