Active Autowerke BMW X3M/X4M (F97/F98) Valved Rear Axle-Back Exhaust

The X3M and X4M have received rave reviews for their performance, but the sound has always been the letdown, muffled enough to leave drivers wondering if they're really behind the wheel of a genuine BMW M vehicle. Active Autowerke's Valved Rear Axle-Back Exhaust was developed specifically to solve this, carefully engineered to increase sound level over the factory system while maintaining optimum flow and resonance, reusing the actuators from the factory BMW valves in the process.

Built from 304 stainless steel, this axle-back delivers a deep, aggressive tone while maintaining optimal flow, engineered for a precise, direct fit. It's designed as part of a complete exhaust system for the F97/F98 platform, comprising this rear section, a single (or equal-length) midpipe, and a set of GESI catted downpipes. Together, this remake of the stock exhaust gives the X3M/X4M the sound it should have had from the factory, genuinely restoring the true M-car driving experience these SUVs deserve.

Why Choose This Axle-Back Exhaust

• Engineered specifically to address the X3M/X4M's overly quiet factory exhaust
• Reuses the factory valve actuators, no aftermarket electronics required
• 304 stainless steel construction for genuine durability
• Precisely engineered for a direct, accurate fit
  
• A rear-section-only version is available for those wanting to keep the stock midpipe

Compatibility

• BMW F97 X3M (2019+)
• BMW F98 X4M (2019+)