Scooter 57mm Cylinder Block Kit For X7 X8 X9 XEvo MP3 125 Carnaby Sport 125cc 200cc 4T This cylinder block kit is designed for use with specified scooter models including X7, X8, X9, XEvo, MP3 125, Carnaby, and Sport variants.It supports 125cc and 200cc 4-stroke engines.The kit includes a 57mm cylinder block engineered to fit these compatible.Installation requires standard mechanical tools and knowledge.proper alignment and torque specifications during fitting for engine performance.This part functions as a replacement or upgrade component for the engine's core assembly.