BAJAJ BOXER X125 Motorcycle engine valve kit typically refers to a set of components that includes intake valves, exhaust valves, valve springs, valve retainers, valve keepers, and valve seals. These components are essential for the proper functioning of the engine's intake and exhaust processes.

   Intake Valves: Intake valves are responsible for allowing the intake of fresh air and fuel mixture into the combustion chamber. Intake valves are subjected to high temperatures and must have good heat dissipation properties.

   Exhaust Valves: Exhaust valves are responsible for expelling the burned exhaust gases from the combustion chamber. Similar to intake valves,  Exhaust valves are also exposed to high temperatures and must be able to withstand the corrosive effects of the hot exhaust gases.

   Valve Seals: Valve seals are small rubber components that fit around the valve stems.