Simonini circuit exhaust for Motobecane mopeds. Fits both av7 and av10 mopeds. av7 might need a slight modification to mount in the rear. No ball joint necessary with this pipe! This exhaust mounts where your stock exhaust did. Comes with a screw in flange and springs. You could probably use it as a launch lever too but we wouldn't recommend doing that. Super limited quantity on these before they're gone again. These are old inventory so expect a little shelf wear and maybe minor dings/scratches.