Malossi V-ONE Engine Casing with Rotary Valve

The Malossi V-One engine crankcase with rotary valve is an ideal product for those who want to replace the original crankcase of their vehicle.

This crankcase is supplied complete with all the necessary components for installation and offers maximum interchangeability with components available on the market.

It can be used for a complete restoration, without requiring modifications to the vehicle and adapting to all original Piaggio parts, or for a simple engine refresh with moderate tuning.

It is compatible with the original Dell'Orto Si 24-24 carburetor and can be installed with the original crankshaft or with the rotary valve crankshaft.

Thanks to the modern CAD systems used in its design, the fuel supply has been revised and improved, ensuring optimal performance.

The V-One crankcase has been specially designed for the Vespa PX 80/125/150, offering maximum choice in terms of components.

It is made of a high-quality lightweight aluminum alloy, which guarantees mechanical strength and workability.

Its gravity casting allows for better internal shapes and increased mechanical strength.

The crankcase is equipped with a reinforced front arm and pins for brake shoes and gear selector.

It is compatible with the original electric starter and does not require the purchase of additional components for installation.

Fluid dynamics have been improved thanks to properly profiled and sized transfer ports.

The problem of oil leakage has been solved by increasing the walls of the pump crankcase, using M8 stud bolts, and precision machining of the sealing surfaces.

In addition, the crankcase clamping system has been improved by eliminating nuts and directly threading the crankcase.

This makes assembly and disassembly of components easier and more convenient.