Crankshaft -QUATTRINI M244, stroke=60mm, connecting rod length=126mm (rotary valve)- Vespa Rally200, PX200, Cosa200 - for Quattrini M244

Quattrini M244 crankshaft with 60 mm stroke and 126 mm connecting rod for PX200, Rally200, Cosa200

Unlike the M232 kit, however, the M244 kit requires the crankshaft housing to be spindled out on the alternator side. Due to the crankpin offset, Max Quattrini has provided the 60 mm crankshaft with a larger overlap, i.e. a larger outer diameter (on the limousine side).

It is designed for use with the original carburettor and touring exhaust, yet already achieves over 20 hp and a whopping 24 Nm at the rear wheel. An original PX200 GS with 12hp/9kW registered in the papers rarely achieves more than 10hp and 15Nm at the rear wheel.

60 % more torque and 100 % more power, in conjunction with a very touring-suitable power delivery, certainly fulfill more than just the dream of every Vespa rider.

The M244 makes use of several technical tricks:

• The cylinder has no cylinder base that protrudes into the engine housing
• The crankshaft has a 16 mm longer connecting rod than a standard shaft
• A piston beveled at the bottom in the overflow area ensures maximum overflow area

Due to the missing base, a significantly larger piston than usual can be used. The extra-long connecting rod makes it possible to position the overflow inlets in the cylinder further upwards than usual. In conjunction with the special piston, which has heavily chamfered surfaces on the underside of the overcurrent inlets, this enables a very large overcurrent area without having to machine the engine housing. The long connecting rod with an impressive 126 mm connecting rod also improves the connecting rod ratio from lambda 0.26 to lambda 0.22, which is important for the smooth running of an engine.

NOTE: Crankcase must be spindled out for the 60 mm stroke crankshaft!

Conclusion: Travel or turf is no longer a question here, but an option.