252cc cylinder kit for perfect "plug and play" assembly on all Vespa PX 200cc engines. This has been done by eliminating the "collar" of the cylinder liner, so it will not be necessary to bore the engine crankcase for assembly. The performances are remarkable, but what is impressive is the torque developed by the engine and the total absence of vibrations, a kit created for tourist use which does not require particular technical knowledge for assembly. The thermal unit can be used with admission to the crankcase or to the cylinder.
The 252cc displacement was obtained using a 72mm piston and a special 62mm stroke crankshaft with 127mm connecting rod.