Description
Throttle pulley -VESPA- V 50-90, SS 50-90, PV 125, ET3 – Ø=21mm
Only suitable if a gas pipe with 21mm diameter is installed as standard. This narrower, old type uses gas traction rollers with a flanged pipe section which is inserted into the actual gas pipe and secured by a specially shaped split pin.
The later models have a bare roller which is pushed directly onto the pipe and then secured by means of a permanent split pin.
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