ApexBuilt® BMW F8X M2/M3/M4 Resonated Catless Race Downpipes (S55, 2015-19)
Our All-New ApexBuilt® F8X M2/M3/M4 Resonated Catless Race Downpipes offer...
• Industry-leading build quality.
• Perfect fitment, guaranteed.
• 3.5" Vibrant style resonators to eliminate drone & rasp
• Drastically improved throttle response, quicker turbo spool, and an aggressive exhaust note.
• Estimated gains of 20-25+ wheel horsepower and 40-50+ TQ when installed on a vehicle that is not tuned.
• Estimated gains of 45+ HP and 60+ TQ over stock power levels when paired with an aftermarket ECU tune.
• TIG-welded T304 stainless steel construction, assembled by hand in Naples FL.
• Lifetime warranty.
These these parts are for OFF ROAD / RACE USE ONLY. They are not 50 state legal. Any of our catless race downpipes WILL NOT be sold in, or shipped to, the state of California. We advise you to run a tune on your vehicle for best results.