Vespa ET 3 [1976-1983] - crankshaft with pin ø 15, connecting rod 97, stroke 51 mm and rotating valve and - cone ø 20

Malossi crankshaft for Vespa ET 3 with rotating valve

This Malossi crankshaft is designed for driving with a rotating valve and combines defined dimensions with a design designed for load-bearing capacity. It guides the movement of the connecting rod and piston and supports the intake control via the crankshaft.

Function and construction

In the version for rotating valves, the suction phase is integrated into the half-crank within the circular mass structure. The pronounced inclination of the half crank supports efficient fluid dynamics. Tungsten parts inserted into the crankshaft serve as counterweights and contribute to the stability of the shaft.

The crankshaft is made from reinforced aviation-grade steel and vacuum cast. The connecting rod geometry is designed to keep weight low while providing the required rigidity. The revised thread on the gear side has a smoother gradation. The adjusted position of the size and shape of the key supports the resilience of the connection. The scope of delivery includes special nuts.

Technical data

• Bolt: ø 15
• Connecting rod: 97
• Stroke: 51mm
• Inlet control: rotating valve
• Cone: ø 20
• Material: reinforced aviation grade steel
• Manufacturing process: cast in vacuum

Vehicle assignment

Suitable for the Vespa ET 3, built between 1976 and 1983.

Note on use

The product is intended exclusively for racing in specially designated locations in accordance with the regulations of the relevant sports authorities. Assembly instructions are available. The technical specifications for the respective area of ​​application must be observed for assembly and use.