3BN00 cylinder have a 56.4mm bore and 50.0mm stroke, fits TZR125 before 1992. 3MB00 cylinder have a 56.0mm bore and 50.7mm stroke, fits TZR125 after 1993. Cylinder Piston Rings Kit 56.4mm (3BN00) Fit for Yamaha TZR 125 TZR125L 1987-1992.
This product is ideal for Yamaha TZR 125 enthusiasts looking to upgrade their piston kit with a robust and dependable 56.4mm cylinder design for their 1987-1992 bikes.
