CG125 cylinder head assembly, the cylinder bore and valve layout perfectly match the CG125 engine 1:1, pre-installed with valves, springs, cylinder head cover and other accessories, compatible with Honda CG125, Pearl River 125 and other 125cc pushrod engine models, directly replaceable without additional assembly; made of high-pressure cast aluminium alloy, integrated cooling fins increase the cooling area, effectively reducing engine operating temperature and preventing high-temperature power loss; factory-installed with core components such as valves, valve springs and cylinder head cover, saving the hassle of purchasing and assembling accessories yourself, only valve clearance adjustment is needed after installation; follows Japanese manufacturing standards, valve guides and seat rings have excellent wear resistance, long-term use is unlikely to cause valve sealing failure or cylinder head cracking.