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, specifically compatible with EX13 and EX13D models rated at 4.5 horsepower.The set includes piston ring clips and retaining pins necessary for proper piston assembly and engine maintenance.Components are engineered to fit standard 58mm piston configurations used in small engine applications.Intended for users performing piston replacement or engine rebuilds, the kit supports reassembly of internal combustion parts.