Hello, I get my new motorcycle this month. Since the motorcycle is still relatively new, there are not a lot of accessories, especially not in the exhaust area. Now a manufacturer has an exhaust available, which is equipped with E-number. On the EC-BE service card, which is always sent with this, is also noted my motorcycle, among some others, but without year of construction specification. Now my question: Can the type approval of my motorcycle expire if I have this type of motorcycle The problem: this exhaust “deactivates” the standard exhaust flap, which all motorcycles with Euro4 standard have installed. The exhaust flap sits in the tailpiece just before the exhaust and is removed without replacement when changing the exhaust.