Vespa PK XL 125 [1983-1991] - crankshaft with pin ø 15, rod 97, stroke 51 mm and reed valve and cone ø 20

MALOSSI crankshaft for Vespa PK XL 125

This MALOSSI crankshaft is intended for the Vespa PK XL 125 in the full year range from 1983 to 1991. The version has a 97 mm connecting rod, a stroke of 51 mm, a ø 15 pin, a ø 20 cone and a diaphragm valve.

Design and technical features

• Crankshaft with diaphragm valve
• Connecting rod: 97mm
• Stroke: 51mm
• Pin: ø 15
• Cone: ø 20
• Hardened, vacuum melted, aeronautical grade steel
• Compensation with tungsten inserts

The crankshaft is designed for engines modified for a reed valve intake system instead of the original rotary valve. A specially designed rear side of the drive side supports the intake of fresh gases into the lower engine housing. The connecting rod is designed to withstand high loads.

Vehicle assignment

Suitable for Vespa PK XL 125, built between 1983 and 1991.

Important assembly information

For assembly, the crankshaft seat on the ignition side of the engine housing must be drilled to ø 87. The execution is intended exclusively for competitions at the designated locations in accordance with the regulations of the relevant sports authorities. Improper use is excluded.