Moin Leude, I am quite fresh here and have a question in the hope that one can help me. I have throttled an Explorer Iron 50 from ATU 50ccm to 25 km/h (electronically) and have bought a exhaust system from Leovince Handmade TT. According to the salesman, this exhaust is compatible with my copy. Anyway, I noticed on my original that there is a kind of hose leading to the exhaust and apparently has a function to fulfil. euen exhaust clamp, however, it is not possible, since there is no connection on my new exhaust as on the original. Take a look at the attached pictures and maybe you know what it is, whether it is important and how or whether I can even mount my new exhaust on my scooter. Thank you very much.