The moving pulley also called Torque Driver consists of a pulley with a diameter of 102 mm, which is attached to a specially designed hub with EKU compression bushing by means of TIG welding. EKU is a dry self-lubricating material that guarantees excellent sliding performance and minimal wear.
The pulley can be adapted to the original Piaggio converter.

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OEM numbers (for comparison purposes only)
Scooter Center:
M6118221B
Malossi:
6118221B, 6118222B, M6118221B