The bearings mounted on either side of the crankshaft in many earlier Vespa models are identical. There is a reinforced bearing available for models of Vespa produced since 1951 that has 9 ball bearings.
The Vespa SIP-Performance Reinforced 9 Ball Crank Shaft Clutch Side Bearing is ideal for applications requiring reliable and efficient clutch assemblies in Vespa scooters and other two-wheeled vehicles.