The Bolt Hex 5x8 is the cheapest item from this partsfiche.
Parts such as the Wire Harness/ Ignition Coil: Cap Assy.,noise S, Suspension,ign, Cord Set,l.high T, Bolt Hex 5x8 are included in the Cmx450c Rebel 1987 (h) Italy / Kph Wire Harness/ Ignition Coil parts fiche.
On this parts fiche the Cap Assy.,noise S is the most specified component.