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General spark plug for KTM Duke 125?? Pub Talk - over 18s only

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Sep 10

Posts: 2255


spark plug for KTM Duke 125??


Fitted all my bits today...

Everythings fine but wrong spark plug!

The original thats still in the bike is a Bosch Super 6.

The wrong one i bought is a NGK BR9EIX

Tottally different thread, length and everything.

Now im looking deeper i see its a NGK LKAR8AI-9

Is this the right plug??

Wanted an Iridium NGK. 

Some of them on Ebay have different thread reach?

Also i only want one not a pack of ten!

Everything else is fine, fully serviced the bike and its running sweet.

Warranty was out and had some knowledgable help so i had nothing to lose.

Arrow Exhaust looks and sounds good...

Once i get the right plug i will try it with the dbkiller out!

Had to tap and die the threads though, for some reason KTM dont do that at the factory.

My friend did that.

cool runnings


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  • Posted 2 years ago (20 April 2013 17:10)

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Jan 04

Posts: 878

fogie says:

ngk iridium

The right iridium plug for your bike is NGK  LKAR8AI-9, stock number 6706, set to 0.9mm gap.

hope this helps  :smile

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Sep 10

Posts: 2255



thanks fogie,

got one of ebay

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