Telescopic arm for motor vehicles and motorcycles exhaust gases which does not need the nozzle to be attached to the vehicle muffler, thus avoiding accidental damage to the vehicle. The great arm flexibility allows it to be used , with both vehicles on the lift bridge and on the ground, without changing the nozzle. The handling system of this arm (two patents have been issued) never comes int o contact with the exhaust gases : in this way the arm efficiency remains unchanged in time. The arm has a closing valve which opens automatically with the arm lowering. It can be used on all the existing Filcar’s tracks. It can be installed either on ceiling and on wall and on all the existing Filcar’s tracks.