The CB1100 Community Forum

Ummm- these ARE OEM- Original Equipment Manufacturer - NGK

With the more modern materials and design / machining capability they have now.

It’s as if… you didn’t actually look / read at all…


Sent from my iPhone using Tapatalk

i was surprised the stock plugs being efi weren't these to begin with my brother cbr600rr had oem iridium like these

When you said you tried 'these'- do you mean the iridium with the smaller tip but still standard square strap? Which would still be an improvement over the stock design- but apparently a 'middle ground'.

Or these DX from overseas with the smaller D shape and different metal?

Plugs arrived today-




Sent from my iPhone using Tapatalk

Very curious to see how it goes Dubs.

Reminds me of project farms testing of different spark plug designs!

https://youtu.be/jcVF3xL_fzk

2014 CB1100, 1981 KZ440 LTD, 1993 Yamaha XJ600 Seca, 1994 Yamaha XJ600 Seca

Did you ever see a noticable increase with these plugs?

Haven't installed them yet. I'm gathering a lot of different parts for all sorts of tests....and then will knock it out on the dyno over the course of a couple days.

Just arrived today set of LMAR8ADX-9S will fit tommorow