Motorcycle Engine Parts Piston Rings Kit Bore STD ~ +100 Size 66mm ~ 67mm For CRM250 246 KAE MD24 CRM 250 This piston rings kit is designed for motorcycle engines requiring bore sizes from STD to +100, specifically fitting models with cylinder diameters ranging from 66mm to 67mm. The set includes piston rings compatible with CRM250, 246, KAE, MD24, and similar engine types. Each ring is manufactured to meet standard specifications for proper sealing and performance in two-stroke or four-stroke engine applications. The kit supports engine rebuilds by providing necessary components for maintaining compression and reducing oil consumption. Installation requires standard mechanical tools and knowledge of engine assembly procedures. Compatibility Disclaimer: This is an aftermarket replacement part. Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.