THIS HEAD COMES COMPLETE WITH ALL COVERS, VALVES INSTALLED, SPRINGS, SEALS, STOCK CAM, ROCKERS, CAM SPROCKET WITH BOLTS. SHOULD WORK ON: LIFAN 120CC, 128CC, 138CC, 140CC AND 150CC (SORRY NOT FOR 125CC'S WITH 54MM X 54MM BORE AND STROKE) SOME OF THE PICTURES BELOW ARE OF A HEAD I COMPLETELY TORE DOWN FYI AND THE LAST 3 PIC'S SHOW THAT IF YOU HAVE A HONDA TYPE RACE CAM, ALL YOU HAVE TO DO IS SWAP OUT THE SMALL END BEARING AND YOU CAN USE THE HONDA TYPE CAM IN THIS HEAD (: S1188/356V EMISSION HOLE READ THE PICTURE @ .EMISSIONS/EXHAUST PORT ON HEAD BLOCK OFF 1/22P (356V) STUD PATTERN ON THIS HEAD / SAME AS MOST ENGINES WITH 78MM TALL CYLINDERS HAS AN AUTO DECOMP BUILT INTO IT YES 23MM INTAKE AND 27MM EXHAUST VALVES CLICK ON PIC TO EXPAND CLICK ON PIC TO EXPAND CLICK ON PIC CLICK ON PIC TO EXPAND (STOCK_CAM_FYI) CLICK ON PIC TO EXPAND CLICK ON PIC TO EXPAND CLICK ON PIC TO EXPAND (WITH_HONDA_CAM)