Thermal Group Diam. 47 Cast iron

Additivated pearlitic cast iron cylinder with 5 transfer ports distribution. Transfer designed to ensure extremely vigorous delivery from low revs. Truncated cone type head with calculated squish band. Piston in high silicon content aluminum alloy with two segments. Elliptical shaped exhaust port with large surface and profi le to increase the life of the segments. Diagram designed to ensure the right balance between torque at low revs and maximum power.