Cylinder Derbi Euro 3 / 4 / 5 80cc Metrakit Pro Race 4

Cylinder Metrakit ProRace 4 for Derbi Euro 3 / 4 / 5 engine.

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

This is an aluminum cylinder, composed of a 2-piece cylinder head with high-cooling insert and a 1-ring graphite piston 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:

• Aluminum Cylinder alloy with Nickel and Silicon Carbide coating, 50mm diameter.
• Gold cylinder head with high-cooling insert.
• Athena graphite Piston with one ring.
• Gasket kit of different thicknesses to adjust it to the correct squish.
• Studs M7x125
• Original thermostat adapter.

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