Call me naive but whaaaaattt??? Cheapest I could find on ebay, help this tight ol' git out. Anyone know where to get half decent plugs cheaper NEW NGK Racing Spark Plug Sparkplug DUCATI 748cc 748 SPS 98-- 00 No.6839 | eBay
yep. these boys are about the cheapest on the planet Sparkplugs UK NGK Champion Denso Sparkplug, Glowplug and Lambda Sensors
I have an SPS and also a 748R and I use the stock Iridium plugs in mine. Racing plugs are expensive although you can get Champion QA55V's for under £4 Champion Racing Spark Plug QA55V Ebay has them at about £30. I tried them in my R and they were fine but it's clear they are more for track use than the road as they make cold starting harder. If you are using the bike for the road you shouldn't need a race plug.