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post #1 of 26 (permalink) Old 06-19-2019, 07:32 PM Thread Starter
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Spark Plugs and Spark Plug Wires for M8

What’s the best Spark Plugs and Spark Plug Wires for Milwaukee 8’s, and what are you using?
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post #2 of 26 (permalink) Old 06-19-2019, 07:37 PM
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Standard factory plugs and wires work just fine.


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post #3 of 26 (permalink) Old 06-19-2019, 07:41 PM
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Whatís the best Spark Plugs and Spark Plug Wires for Milwaukee 8ís, and what are you using?
Nothing wrong with the stock plugs and wires. You can change the plugs out every 10k miles and still come out cheaper than buying iridium plugs in the long run. I do like the SE plugs wires because of the color choices.
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post #4 of 26 (permalink) Old 06-20-2019, 06:11 AM Thread Starter
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How about 12MM twisted Wires?
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post #5 of 26 (permalink) Old 06-20-2019, 07:33 AM
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How about 12MM twisted Wires?
For what reason?

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post #6 of 26 (permalink) Old 06-20-2019, 09:33 AM Thread Starter
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Mainly keep flow to spark plugs
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post #7 of 26 (permalink) Old 06-20-2019, 09:37 AM
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First, with the need to remove the tank, changing plugs is a bigger deal than it used to be. Second, now that the MoCo uses pazio knock sensors and has kicked that ion voodoo to the curb, there will be less issues with wires.

4 NGK iridium plugs is less than $40, a lot less than the MoCo wants for 4 SE iridium plugs. Less by half.

As for the wires, the secondary voltage is nothing to get excited about, so no need for anything special. OEM wires will be fine. If it turns out the M8's chafe the way twin cams did, just buy $2 worth of armor sleeve. It'll work just as well as $100's worth of 11mm hi performance nito proof 1 million volt race wire guaranteed to give you 10 percent more power.

You really shouldn't even need to think about wires for 50-60K miles.

Well, unless you feel the need for a set that matches the lightning bolts painted on your boots.
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post #8 of 26 (permalink) Old 06-21-2019, 04:22 PM Thread Starter
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I was getting the fat one 12MM Twisted yeah over $100 but my bike deserves it LOL. Take me 5 days week 50 miles to work 50 miles home LOL. Seriously I like the look kinda stands out and looking at Harley ones well what’s the difference price wise. LOL. As far as plugs thinking of NGK Iridium CR9EIX. Not sure are the CR9EIX all same or is there difference in them?
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post #9 of 26 (permalink) Old 06-21-2019, 04:55 PM
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From the numbers on the HD spark plug boxes, it looks like the 6R10ís are the Champion RG6HCCís
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post #10 of 26 (permalink) Old 06-21-2019, 08:51 PM Thread Starter
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What about NGK Iridium CR9EIX
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