Cat-back-system consisting of 1 front silencer replacement pipe, 1 connecting pipe and centered sports exhaust (without tailpipes) with integrated valve, incl. CE approval REMUS tube Ø 70 mm It is not allowed to activate the valve on public roads according to the EU transport authority. Valve activation is done via the separately available REMUS sound controller. The sound controller and electric actuator allow the valve to be operated in 4 different positions.