ApexBuilt® BMW G-Chassis B58 Gen 2 GESI High-Flow Catted Downpipe (2018+)

From $1,399.99
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ApexBuilt® BMW G-Chassis B58 Gen 2 GESI High-Flow Catted Downpipes offer...

• Industry-leading build quality.
• Perfect fitment, guaranteed.
• No CEL or other emissions related error codes, guaranteed (no ECU tune required).
• Drastically improved throttle response, quicker turbo spool, and an aggressive exhaust note versus OEM.
• GESI 400-Cell UHO Gen2 cats, resulting in 49 state emissions compliance
• Estimated gains of 20-25+ wheel horsepower and 30-35+ TQ when installed on a vehicle that is not tuned.
• Estimated gains of 45+ HP and 50+ TQ over stock power levels when paired with an aftermarket ECU tune.
• TIG-welded T304 stainless steel construction, assembled by hand in Fort Myers, Florida.
• Lifetime warranty.


These parts are for OFF ROAD / RACE USE ONLY. NOT CARB certified, not street legal in CA.