Motorcycle NC250 NC300 Cylinder Kit 84mm Cylinder Block Piston Ring Gasket For 250CC replacement 300CC Engine Parts.This cylinder kit is designed for engine replacement and rebuild applications on compatible models.Includes cylinder block, piston, piston pin, piston rings, and gaskets.Cylinder bore diameter is 84mm.Cylinder dimensions: 98.5 x 51 x 84 mm.Piston dimensions: 84 x 44.5 mm.Piston pin dimensions: 50 x 16 mm.Material: Aluminum.Compatible With ZS177MM, NC250, NC300, BOSUER RTC300, KAYO K6, K6R, T6, RX3, AVANTIS A7, PTS 300 CARB, 300 PRO/EFI, 300 PRO CARB, MOTOLAND WRX 250 , WRX 300 , XT250 ST , XT300 ST FA/, SM-MOTORS GR7-NC250, GR8-NC250, GR8 F300L PRO, BRZ X6S 300cc, MOTAX EX 300, EXR 300, LD 300, FXMOTO X3, X7, X8.Not compatible with NB inclined cylinder head or S-version double camshaft engines.Installation requires verification of fitment with specifications. Disclaimer: This is a compatible replacement part.Any brand or model mentioned is for compatibility demonstration, not endorsement.