This SIP conversion cylinder head represents an economical first step on the road to tuning any Vespa wideframe model. Aluminium / CNC machined. This cylinder head can only be used in combination with a 150cc piston (#75008000) produced by GRAND SPORT.
This cylinder head conversion kit includes an 'O' ring gasket for improved sealing. Vespa motors with 150cc can be fitted with this cylinder head without any further modification. Models that are fitted with the 125cc cylinders will require these to be re-bored and honed to a diameter of 57mm.
Mounting Tip : The timing of the ignition will require adjustment :
Customers also searched for this article with: