BMW M4 Performance Exhaust - AWE Tuning Track Edition Cat-Back, Chrome Silver Quad 4.5 in Double-Walled Slash-Cut Tips (2021–2027). Constant valve-open sound for the S58.

Based on AWE's SwitchPath design without the rear valved muffler, the Track Edition stays open at all times. Valve simulators are included, and adapters connect to the factory mid section. A bespoke X-pipe and dual 3 in layout smooth the S58's voice with measured gains up to 3 hp and 5 lb-ft at the wheels, plus weight savings when paired with AWE mid-pipes. Due to varying cut points, it is not guaranteed to mate with other brands' mid-pipes. Note: this version is loud and not returnable for sound preference.

Features

• Chrome silver quad 4.5 in double-walled, slash-cut tips
• Constant valve-open, straight-through design
• 50-state legal; fits stock and M-Performance valances
• Adapters for factory mid section; optional AWE mid-pipes
• AWE Perfect Fitment, No CEL, Lifetime Warranty

Questions or want it installed? Call Austin at 512-982-9393 (TX) or our Los Angeles area team at 562-981-6800 (CA). We offer installation and customization at our Austin, Texas and Los Angeles, California locations.

Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov