52mm Cylinder Piston Gasket Rebuild Kit125cc. For Yamaha YZF-R 125 2019-2022 52MM 14MM-Piston pin. Bore Size: STD 52mm. 1x 52mm Cylinder. If your cylinder blows through, the compression is too low, or even a piston seizure has occurred, then this kit is exactly the right thing for you.
