Hi, I have a question about these spark plugs the champion RA 6 YC are no longer available. Doeschampion make a sister plug or do I have to stick with my NGKs? Thanks Vince

the Champion RA6YC were discontinued a long time ago. The DIRECT replacement is the RA6HC, not the RA8HC which depending on your state of tune may be too hot a plug

Thanks for the info.. I was also wondering should I go with champs or keep the ngks?

There have been many discussion here on just that subject, While I normally wouldn't put champions in my lawn mower
Many here swear they are a noticeable improvement over the rest and also recommend the RA6HC as the very best choice for any Paso
You can order the RA6HC here

Here is one such thread you can find by using the search function here iridium plugs: if you havn't- try it.

Thanks

Yeah, I long had the opinion the Champion plugs were not good quality in general, but they seem to be the best in my 1990 Sport. I was skeptical, but after trying them, they run better than the NGK plugs. My local auto parts shop sells them for less than $3.00. Now that I think about it, its been a while, and I should probably change them.

Cheers,

hmmm interesting. I had been chasing an issue with my 450cc 907ie single. [Hori cyl not firing]
I had changed plug wires and new spark plugs when getting the bike sorted after buying it and it had run Ok.[not that I ride it much]

Any way I swapped the coils with the others from the restoration bike, ECU, etc.
There was a spark at the plug, but was running out of ideas, so I put back in the old NGK I had taken out, mmmm fired up perfectly......dud new plug?
1st in my life of 35years playing with cars and of course it has to be on a duke!