SIP Farobasso 151cc racing cylinder kit for Vespa 125/150cc VM/ VN/ ACMA/ VB/ VGL1/ VL wideframe scooters.

SIP have produced a range of cylinder kits modified to fit older engine types where the cylinders are no longer produced. With this kit SIP have taken a Piaggio original APE cylinder and included a special base gasket spacer with the 3rd transfer (boost) port closed for early 2 port crankcases. These kits are superior in performance to the original 2-port cylinders. No crankcase modification is required. A CNC machined cylinder head is also included to complete this kit.

An SIP road exhaust and electronic ignition are recommended to get the most out of this kit.

The original 54mm crankshaft in 125cc engines will need to be replaced with a crankshaft with a 57mm stroke. A performance crankshaft is recommended.