Malossi MHR aluminum thermal unit D 47,6 piston pin 12

The Malossi MHR Ø 47.6 thermal unit is a high-quality and high-performance product for two-stroke engines.

The cylinder is made of a special alloy of aluminum with a high percentage of silicon and titanium, which guarantees high resistance to high temperatures.

Thanks to the special heat treatment, the material maintains its mechanical and dimensional characteristics constant up to temperatures of 250°C.

The machining for chip removal is carried out with very precise dimensional and shape tolerances.

The internal surface of the cylinder is coated with silicon carbides on a nickel matrix, which gives the product high hardness and remarkable wear resistance.

The internal machining of the cylinder allows obtaining a high-quality finish on the sliding walls.

The exhaust and transfer diagrams have been specifically designed and made for competition, with a significant commitment from Malossi technicians.

The piston is made of a special alloy with a high percentage of silicon, which guarantees high resistance to high temperatures.

The external coating in tin reduces friction.

The structure of the piston is reinforced to withstand the stresses imposed by competition, but at the same time, it is lightweight to reduce inertia forces.

The piston ring is made of spheroidal cast iron with a hard chrome overlay on the outer surface.

The segments are made of spheroidal cast iron with high mechanical resistance, with a hard chrome anti-wear overlay on the contact surface.

The cylinder head is made of a special alloy of aluminum with a high coefficient of heat exchange.

The heat exchange surfaces have been recalculated and increased, and the combustion chamber has been redesigned for a high compression ratio with high turbulence.

The machining of the head is carried out on numerical control machines.