Piston ring UMA Yamaha, Fantic, Beta 125er, 180cc UMA Motoren, 62mm

The UMA piston rings are THE spare part when it comes to tuning UMA cylinders. They are made for the 180cc, 62mm cylinders for Yamaha, Fantic and Beta 125s and are essential for sealing the combustion chamber of the cylinder. They are designed for tuning cylinders and therefore offer improved heat dissipation and optimized dosage of lubricating oil for the cylinder wall and piston running surface.