Motorcycle Engine Parts Piston Ring Pin Kit For 650cc GT650 GT650R GV650 GT GV 650 650R This piston ring pin kit is designed for use with 650cc motorcycle engines.It includes piston rings and wrist pins compatible with models designated as GT650, GT650R, GV650, GT, GV 650, and 650R.The components are engineered to fit standard bore sizes and support proper cylinder compression.Each part is manufactured to meet specifications for engine function.This kit is intended for engine rebuilding or replacement applications where piston wear has occurred.This product is a third-party replacement.Any use of brand names or model designations is purely to indicate compatibility.