Phil...
The 12mm plugs can be found under the
motorcycle category (DCP series).
There used to be a DCP(R)6E-9 plug but this
was dropped due to lack of demand about
3 years ago, when NGK "streamlined" it's
production and dropped plugs for which
there was little use/demand.
Last time I purchased a 10pack was almost
3 years ago, when the following were
available.
DCPR7E-9 ("normal" tip)
DPR7EVX-9 (Plat.)
DPR7EIX-9 (Iridium)
I just sent an email to NGK here in the states to see whether something new has
been added for "6" heat range in this size
plug. Should have an answer within 24hrs.
which I will pass along to you.
Thus far I have used the DCPR7E-9 with
excellent results running 9.8-1 on premium
unleaded (93PON), 30 degrees total ign.
advance.
Cap'n Bob
Basic Frog
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