Crankshafts for classic Vespa engines: sensible replacement when overhauling the engine

Crankshafts on old Engines are often tight or the Disc Valve is rusted. Bearing and shaft seal seats are often worn, connecting rod bearings are worn out or cones and keyways are damaged. The Crankshaft should therefore also be replaced during a major engine service.

SIP Crankshafts are "Made in Italy" and are characterized by particularly good quality. The SIP PREMIUM crankshafts serve as a replacement for the original crankshaft in top quality.

MAZZUCCHELLI has been supplying first-class yet affordable Vespa Crankshafts for decades. Appearance, quality and timing correspond to the PIAGGIO original.

DRT manufactures Crankshafts for older Models with modern, adequately dimensioned and well lubricated connecting rod bearings at the top and bottom. This means that the crankshaft drive can also cope with tuning levels suitable for touring.

Mushroom, full cheek and rotary valve shafts were originally installed. Some older models have a brass bushing instead of a connecting rod bearing. The model allocation is based on the manufacturer's specifications and PIAGGIO parts catalogs. The most important dimensions are given to aid selection: Ø Gudgeon Pin, Ø Crankshaft Pin, connecting rod length and stroke. Before installation, it is essential to check that the dimensions of the originally installed Shaft match the new one.

Caution: On the crankshaft stub on the clutch side, the recess for the locking cage of the Castle Nut is missing. Nut DRT is recommended when using PX clutches.

Conclusion: Perfect for an engine overhaul and sufficient for subtle tuning.