BGM Pro Exhaust Manifold Stainless Steel (to be used with lambda sensor) Vespa GT 250 (ZAPM45102), Vespa GTS 250. Vespa GTS 300 ie Super Sport HPE 4V 21- Exhaust Manifold Stainless Steel BGM Pro. Vespa GTS 300 ie HPE 4V 19-21 ABS E4 Exhaust Manifold Stainless Steel BGM Pro.
