1)Water cooling , 4-valve ,20KW,strongest power 2)TAIWAN upside down shock absorber,fashionable ... volume(L)13 IV. Basic configure MODELSimple stateUNITquantityCOLORNOTEG2 250CC 4-valve water cooling engine,KT30 carburetor,Racing muffler,tank protetor,Fr ... as a professional motorcycle manufacturer. FAST RACING BIKE 250cc 4 valve