58MM EX13 Piston Ring Clips Pin Kit For EX13 EX13D 4.5HP 4 Stroke Engines This piston ring clips pin kit is designed for use with 58MM bore 4 stroke engines model EX13 and EX13D rated at 4.5HP.The set includes piston ring clips and retaining pins necessary for assembly and repair of the piston mechanism.Components are sized to fit standard 58MM pistons used in these engine models.The kit supports proper installation of piston rings to effective sealing within the cylinder.Suitable for maintenance and rebuild projects on compatible small engines.Compatibility Statement: This is not an manufacturer part.Brand/model references are used for fitment guidance.