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RC51 Forums Moderator
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OEM is the best one for the bike. They are usually NGK Iridiums. I think they should be replaced every 28k or so.
 

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Premium Member
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6,495 Posts
Via the service manual, they should be changed every 16K miles or 24K Km.
I've stuck to that and have had to problems.
I kept my last ones and they looked nice and light tan after 16K miles, just as they should be.

The SP1's use a slightly different iridium plug than the SP2's.
Also the SP1 plugs are slightly cheaper than the SP2 plugs.
 
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