SOHC.co.uk Forums > CB500/550
550 spark plugs
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shifter:
Can someone advise me on best spark plug to use on a 550 f1 ,standard air box , 069a carbs . Many Thanks.
Bryanj:
Whatever ngk say but take the R out of the number
shifter:
Thankyou Bryan , I have some D8ea here , hope they’re not fake ..
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