SHENG-E(S.E.E BRAND) can supply competitive price and high quality products Such us Ceramic/Aluminum Alloy/Iron Steel Cylinder, Cylinder head, Forged Piston, Piston ring, Piston pin,Connecting Rods, Valve, Crank Shaft, Spark plug, Gasket, Cam Shaft, oil seal, bearing, chain ...etc. We also accept OEM/ODM and customize to produce...for HONDA SY125 ,we have two type and big bore kit,contact with us...