L or R axis backup system, without EC type approval: 1 x 004513 0500 + 1 x exhaust pipe set + STE 0010! Sports exhaust (without tailpipes), with integrated electric valves The sports exhaust can be rotated 180° and can therefore be used on the left or right side of the car. The outlet tube with the valve is clamped and can also be rotated. Activation of the valve is done via the REMUS Sound Controller which must be ordered separately. The REMUS sound controller and electric actuator allow the valve to be operated in 4 different positions. Without CE approval.