AWE Valved SwitchPath Axleback Exhaust For F9X BMW X3 M/X4 M

The ultimate blend of aggression and sophistication—without the drone.

The AWE SwitchPath™ Axleback brings patented drone-canceling 180 Technology® to the S58-powered BMW X3/X4 M, delivering a tone that’s clean, deep, and composed while cruising—but rowdy when you want it to be.

Crafted from 3-inch, U.S.-sourced T304L stainless steel, the system features a valved SwitchPath™ muffler that seamlessly retains factory valve behavior—no harnesses or extensions needed. Minimal bends. Maximum flow. Push-button transformation.

The SwitchPath™ Axleback is engineered to begin at the factory cut point, making it compatible with the stock mid-section or any aftermarket mid-pipe that respects the OEM cut point.

If you’re chasing clean sound, drone-free cruising, and emissions compliance—this is it.

Perfect tone, compliments of AWE 180 Technology®:

Keeping the aggression out at the rear of the X3/4 M, and out of the cabin, is AWE’s patented drone-canceling solution, 180 Technology®. As exhaust gases exit the S58 engine and flow into an AWE 180 Technology® equipped resonator, they pass through strategically located ports, and into reflection chambers. Sound waves, carried by these exhaust gasses, bounce off the walls of the reflection chambers.

By controlling the size and location of the ports and the chambers, we also control when the sound waves exit the chambers. The specific timing of when the reflected sound waves rejoin the main exhaust flow creates a one-hundred-and-eighty-degree out-of-phase sound wave that cancels out problematic frequencies.

X marks the spot. Presenting the AWE SwitchPath™ Exhaust Suite for the BMW F9X X3 M & X4M:

• Available as a valved Axleback; modular Performance Mid Pipes sold separately
• SwitchPath™ Axleback features drone-canceling 180 Technology®
• Retains full factory valve behavior using OEM valve motors—no extension harnesses needed
• Axleback is compatible with factory or aftermarket mid pipes that maintain the OEM break point
• Performance Mid Pipes are designed to work seamlessly with the factory axleback, or AWE Axleback
• Bespoke X-pipe in the non-resonated Performance Mid Pipes delivers a refined S58 tone when paired with SwitchPath™
• Quad 4.5” double-walled slash-cut tips in chrome silver or diamond black
• Max gains of 9 hp and 2 lb-ft of torque at the wheels (Axleback + Mid Pipes)
• 50-state emissions-compliant
• Clean, straight-through design for maximum performance
• Handcrafted in-house at AWE
• AWE No CEL Guarantee
• AWE Perfect Fitment Guarantee
• AWE Lifetime Warranty

*** The item above, if not in stock, is build-to-order and may require additional shipping and handling time. If it is not designated as "IN-STOCK" above, then please call for an accurate ETA. Or, you may place your order and you will receive an ETA shortly thereafter.