Motorcycle Engine Parts Piston Rings Kit Bore STD Size 49mm ~ 50mm For XV250 XC125 Cygnus T105 Crypton ATV YFM100 JOG100 This piston rings kit is designed for use with motorcycle and ATV engines.It includes a set of piston rings with a standard bore size ranging from 49mm to 50mm.The kit is compatible with engine models used in XV250, XC125, Cygnus, T105, Crypton, YFM100, and JOG100.These rings are engineered to maintain proper compression and oil control within the engine cylinder.Installation requires standard mechanical tools and knowledge of engine assembly.The components are made from materials suitable for regular engine. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.