P-PX200 Full Circle Long Stroke 60mm Crank

Full Circle, Long Stroke (60mm), Italian Made Crankshaft for Vespa 200cc P-Series Scooters and 1978 Rally 200 w/ P-series Engine.

This full circle and long stroke crankshaft is designed for HEAVILY tuned engines using a reed valve induction system. This crankshaft will not work with the conventional rotary style of intake equipped on Vespas from the factory. When paired with a reed valve induction configuration, the full circle crankshafts increase crankcase pressure by limiting empty space left by conventionally cut crankshafts. Two-stroke tuners know that there's no better induction system than reed valve. Maximize the performance of your reed valve induction by marrying it to this Full Circle Crankshaft. In addition to the full circle crank webs, the STROKE on this crankshaft has been increased from 57mm to 60mm. The longer stroke increases displacement and torque.

This crankshaft is best installed with a Cylinder Kit or Heavily modified and port-matched top end, 26mm or larger carburetor, and a free-flowing expansion chamber.

You'll likely need to install a thicker cylinder base plate in order to safely run this crankshaft.

All good running engines start with a solid crankshaft. Mazzucchelli has been making the highest quality crankshafts out of their third generation family factory in Cavaria, Italy since the 1960s. This crankshaft is trued to less than .001" runout and machined to factory specifications. All Mazzuchelli crankshafts are equipped with silver-caged big end bearings. This beautifully crafted hunk of Italin iron is ready to be installed...With confidence!!

**16mm small-end (wrist pin) caged needle bearing is included.**

Actual item may differ from picture.