Three-part BGM precision roller bearing for the main shaft bearing on the gearshift side of Vespa VNA, VNB, VBB, Super, Sprint, GT, GTR All 125 / 150cc Vespa engines with horizontal cylinder (from approx. Year of construction 1957), starting with the VNA models with direct suction via a multi-part main shaft bearing on the switch latch side. This consists of a bearing shell, individual rollers and an open bearing cage. [...]