Exhaust manifold -BGM PRO, stainless steel- (to be used with lambda sensor) Vespa GT 250 (ZAPM45102), Vespa GTS 250 (ZAPM45100, ZAPM45101), Vespa GTS 300 (ZAPM45200, ZAPM45202, ZAPMA3300), Vespa GTS HPE 300 (ZAPMA3600), Vespa GTS Super 300 (ZAPM45200, ZAP