S p e c s: VSE1M Motor
casings are very similar to the Rally and PX200 with a few very small
Cranks: The crank is the same as a Rally & PX200 crank
which is readily available.
Standard Barrel: The standard barrel has two main ports and a
smaller third port. The barrel is not really useful for tuning as all
the ports and transfers are internal to the barrel casting.
Kits: Any large frame kit over 200cc.
Ignition: The P series bikes have a 12V electronic ignition system that is bulletproof. Spares are easy to obtain. There is no real option for upgrading this ignition system.
later large frame gearboxes after the Vespa 150 Sprint will fit. The
clutch can be upgraded to a "Cosa" clutch for better performance.