Tuning cylinder 150ccm BGM PRO suitable for Vespa VM, VN, VB1, VGL1, VL1 BGM PRO cylinder with 150ccm with 57 mm stroke suitable for all 2-channel engines. The cast iron cylinder has three transfer ports and is suitable for all wideframe motors with a 57 mm stroke. The cylinder with the 125 mm crankshaft fits on the 54 cc engines with 57 mm stroke.
