Motorcycle Engine Parts Piston Rings Kit Bore STD Size 70mm ~ 71mm For XT225 ST225 Bronco TW225E TTR230 TW200 BW200 This piston rings kit is designed for use with motorcycle engines requiring a standard bore size between 70mm and 71mm.It is compatible with models including XT225, ST225, Bronco, TW225E, TTR230, TW200, and BW200.The set includes piston rings that help maintain proper compression and oil control within the engine cylinder.Each ring is manufactured to meet specifications for fit and function.This kit supports engine performance by reducing blow-by and oil consumption during. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.