The Clamp,spark Plug Cap is the lowest priced item on this Ignition System schematic.
Parts such as the Ignition System: Plug-spark,r7376-7(ng, Br9ecmvx (ngk Sparkpl, Plug-spark,r7376-8(ng, Cap-spark Plug,tb05em are included in the Kx250r6f Kx250 2006 Usa Canada Ignition System parts fiche.
With two applications this Bolt,6x18 is the most specified part.