Better-Motorcycle 52.4Mm Cylinder For NSS125 KZR125 PCX125 Single-Cylinder Engine Cylinder Piston This cylinder is designed for single-cylinder engines used in models such as NSS125, KZR125, and PCX125.With a bore size of 52.4 mm, it fits engine configurations requiring this specific measurement.The unit includes a matching piston, proper alignment and function within the engine block.It is engineered to replace the cylinder in compatible and motorcycles.Installation requires standard mechanical tools and knowledge of small engine assembly.The design supports consistent compression and when integrated into a well-maintained engine system.