When overhauling the cylinder head assembly, replacing as many of the wear items as possible will simplify the assembly and subsequent adjustments required to set up the valve gear correctly. The most vital items include camshafts, valve guides (very important to prevent smoky start-ups!), valves and valve springs.
In addition the cam-chain, guides and tensioner assemblies must also be in perfect (or near perfect) condition.
This will help achieve a smoother, quieter running engine capable of revving out and still producing plenty of mid-range torque.
This component and perhaps a number of those listed below maybe required:
Add as many components as you wish to the same shopping cart, gaskets, valve stem seals & new bolts for example, and still only pay the same single fixed price shipping cost.
This part may have other applications within the Kawasaki model range.