Cylinder Minarelli AM6 80cc Metrakit Pro Race 4

Cylinder Metrakit ProRace 4 for Minarelli AM6 engine.

The manufacturer Metrakit surprises us after quite some time, launching this new and improved Cylinder compared to its previous version MK Pro Race3, which you can now purchase at motoscoot.net. The Cylinder consists of 5 transfer ports and a large exhaust with boosters on its sides.

This is an aluminium Cylinder, composed of a 2-piece cylinder head with high-cooling insert and a graphite-coated Piston with 1 ring from the manufacturer Athena.

The main difference compared to the MK ProRace 3 is its diameter. The ProRace 4 has a diameter of 50mm, resulting in a displacement of 80cc.

The kit includes:

• Aluminium alloy Cylinder with Nickel and silicon Carbide coating, 50mm diameter.
• Gold cylinder head with high-cooling insert.
• Athena graphite-coated Piston with one ring.
• Gasket kit of different thicknesses to adjust it to the correct squish.
• Original thermostat adapter.

The squish recommended by the manufacturer for street use is 0.95 and for circuit use is 0.85.

Attention! To install this Cylinder, it is necessary to purchase this nozzle BOC350