Motorcycle 77mm Cylinder Kit Cylinder Block Head Gasket Piston Ring For CBS350 CBS300 ZS174FMM Upgrade To 350cc Bikes This cylinder kit is designed for motorcycles with CBS350, CBS300, and ZS174FMM engine models, allowing an upgrade displacement to 350cc.The set includes a 77mm cylinder block, head gasket, piston ring, and related components for engine performance enhancement.It supports engine rebuilds and modifications by providing compatible parts that fit specified engine types.The kit enables improved power output and efficiency when used in applicable motorcycle engines. This is not an part.All brand mentions are used strictly for compatibility reference.