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. Applications: SR 50 2004- Piaggio Carburettor, SR 50 R, GP1 50 OPEN, GP1 50 LC, GP1 50 REVOLUTION, DNA 50 LC, Runner 50 LC 2005, Runner 50 SP LC 2005, Runner 50 SP LC Carburettor 2006, NRG 50 LC , NRG Extreme LC, NRG Mc2 LC 1997, NRG Mc2 LC 1998, NRG Mc3 DD LC, NRG Power DD LC, NTT LC, Quartz LC, Zip SP LC 2000, Zip SP LC 2001.