REPLACEMENT PARTS AND THE COMPONENTS IN THIS KIT ARE LISTED BELOW ON THIS PAGE. This is a bolt on Kit no machine work required. lf107/125kt$555.55 54mm_STROKER CRANK_FOR_CDI ENGINES_WITH_69MM TALL_CYLINDERS (200154) 200154$239.95 54MM_PISTON_KIT (OLD_70_DOME) (SHORT_ROD) (SHORT_CYLINDER) 13mm_pin (100034) 100034/35$69.95 "SHORT"_68MM LIFAN ZONGSHEN JINCHENG RACE_CAM (MOST_50_70_90CC) (200147) "SHORT"_68MM LIFAN ZONGSHEN JINCHENG RACE_CAM (MOST_50_70_90CC) (200147) 200147$35.95 HEAVY_DUTY VALVE_SPRINGS WITH_WIDER COIL_SPACING FOR_HI_LIFT_CAMS IN_50_70_HEADS (200149) HEAVY_DUTY VALVE_SPRINGS WITH_WIDER COIL_SPACING FOR_HI_LIFT_CAMS IN_50_70_HEADS (200149) 200149$13.99 51MM_OR_52MM BORE Gasket_set complete _For_all engine_types 200014_200015 temp 51MM_OR_52MM BORE Gasket_set complete _For_all engine_types 200014_200015 temp 200014/15$19.99PICK_BORE_SIZE: 52MM_200015 COPPER_HEAD_GASKET 50_&_70_HONDA'S XR_CRF_Z_CT_ATC TRX90_&_70 ALSO LIFAN AND ZONGSHEN COPPER_HEAD_GASKET 50_&_70_HONDA'S XR_CRF_Z_CT_ATC TRX90_&_70 ALSO LIFAN AND ZONGSHEN CU/50/70/90$11.95PICK_BORE/THICKNESS: HERE-->39/40MM/.016"=.38MM39/40MM/.021"=.5MM39/40MM/.032"=.76MM47MM/.016"=.38MM47/48MM/.062"=1.5mm50MM/.020"=.5MM50MM/.042"=1.0MM52MM/.016"=.38MM52MM/.032"=.75MM52MM/.042"=1.0MM52MM/.062"=1.5MM52.4MM/.016"=.38MM52.4MM/.032"=.75MM52.4MM/.042"=1.0MM54MM/.016"=.38MM54MM/.042"=1.0MM54MM/.062"=1.5MM