Active Autowerke Downpipe w/ GESI G-Sport Cat - 2016+ M240i / 340i / 440i (B58) BMW 3 Series E9X (2006-2012) 335d M57 3.0L Rotrex C38-92 Supercharger

Rotrex C38-92 Supercharger

Off Road Only Downpipe Map

One Size Fits All

Non intrusive mounting helps maintain existing factory trunk space (exception Convertible models)

Active Autowerke Downpipe w/ GESI G-Sport Cat - 2016+ M240i / 340i / 440i (B58) BMW 3 Series E9X (2006-2012) 335d M57 3.0L Rotrex C38-92 SuperchargerBMW introduced a new valvet ronic, single turbo version of its direct injection engine for the later F Chassis models beginning in 2016 and carried over to the G chassis models. The Active Autowerke B58 downpipe for the M340i and M440i helps unleash some of the potential that is restricted by the OEM downpipe. Turbochargers are powered by spent exhaust gases created during the combustion process. The quicker these gases are evacuated, the better.