Quick question or two - I know that these plugs are sometimes sold as single units (as they appear to be on the ebay link) as they are used in motorbikes. However, I
think the bike plugs come with a different gap setting. Is it the same for these or are they preset to 0.8mm like the 4-pack?
Also, there was a post or two about some folks reducing the gap from 0.8 to 0.67mm or something like that on tuned cars. Is there anything behind reducing the gap (as there is a big danger of damaging the delicate tips on these plugs?
The pad damper I'm talkin about ^^
I managed to source 4 of these for my NQSBBK as I was unlucky enough to get a bit of low speed squeel although it may have been a combination of discs, pads and not being broken in enough. These things fixed it no problem anyway. As a bit of advice, if you are going without the anti-squeel shims, use a non-petroleum based grease on the back of the pads like CeraTec. Copper grease rots the bejeeziz out of the rubber dust seals.