The AWE SwitchPath™ Cat-Back Exhaust transforms your BMW’s exhaust note and performance with a valved, high-flow design engineered specifically for S58-powered M3 and M4 models. Crafted from premium 3″ T304L stainless steel with a precision X-pipe and drone-cancelling 180 Technology®, this system delivers a deeper, more commanding tone under throttle while remaining refined at cruise. The SwitchPath™ valved muffler integrates seamlessly with factory valve controls—no extra remotes or modules required—offering driver-controlled acoustics through OEM drive modes. Dual 4.5″ double-walled Chrome Silver or Diamond Black slash-cut tips add a bold rear aesthetic that complements performance-oriented styling. Emissions compliant for all 50 states with ball-socket mounts for easier installation.
Designed for select BMW G8x M3 / M4 (S58 engine) models
Uses factory mid-section adapters — may not mate with all aftermarket mid-pipes due to cut point differences.
Works with both stock and M-Performance valances.
Complete AWE SwitchPath™ Cat-Back Exhaust system
Quad Chrome Silver or Diamond Black 4.50″ double-walled slash-cut exhaust tips
X-pipe section and valved muffler assembly
Factory-matched mid-pipe adapters (as required for fitment)
All necessary clamps, hangers, and hardware for installation
Installation instructions
Exhaust Type: Cat-Back with valved muffler (SwitchPath™ system)
Material: T304L stainless steel mandrel-bent tubing (3″ diameter)
Tip Finish: Chrome Silver or Diamond Black (quad outlet, slash-cut, double-walled)
Valve Control: Retains factory valve operation (no separate remote required)
Sound Character: Aggressive under throttle with reduced drone in closed mode
Emissions: 50-state legal configuration (retains catalytic converters where applicable)
SwitchPath™ valve technology delivers dual exhaust personalities — refined and quiet or full performance aggression.
Drone-canceling design for minimal cabin vibration at cruising speeds.
Precision X-pipe smooths exhaust pulses for a richer, deeper tone and improved flow.
Quad tips add a premium look that fills rear bumper valances.
Built in-house by AWE with high-quality materials and meticulous fabrication standards.
AWE No CEL Guarantee and Perfect Fitment Guarantee help ensure a trouble-free upgrade.
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