NGK D9EA Spark Plug
NGK D8EA Spark Plug XL250, F650 etc.
NGK D7EA Spark Plug Honda TL250, BMW etc.
NGK DR8ES-L Spark Plug Honda TLR200 TLR250
Boyer Bransden Micro Digital Ignition BSA/Tri Single Distributor
Boyer Bransden Micro Digital Ignition BSA/Tri Singles sidepoints