ApexBuilt® BMW F90 M5 & F92/F93 M8 Race Downpipes (S63R, 2018+)

ApexBuilt® F9X M5/M8 Catless Race Downpipes offer... • Industry-leading build quality. • Perfect fitment, guaranteed. • Drastically improved throttle response, quicker turbo spool, and an aggressive exhaust note versus OEM. • Estimated gains of 35-45+ wheel horsepower and 55-60+ TQ when installed on a vehicle that is not tuned. • Estimated gains of 65+ HP and 70+ 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. PLEASE NOTE: These these parts are for OFF ROAD / RACE USE ONLY. We advise you to run a tune on your vehicle for best results.