I read up on the tutorial page about how to change the plugs on my bike...or what i thought was my bike. In the title it says "how to change plugs on S4R"...but in the post it specifies "S4R Testastretta ". So i ordered the plugs NGK CR9EIX. Will these still work? On the NGK site they specify DCPR9EIX.
OK, no response....easier question...what plugs can i use on a 2005 S4R?
the cr9eix won't work.
The DCPR9 is the one you want.
Can't speak for ducpainter's recommendation for the DCPR9, but I'll share what I use. My plugwires have the internal caps, so if like mine; you need plugs with removable caps. Iridiums are out for the setup. Learned the hard way. Caps still do not detach on iridiums.
Anyhoo! I have been using NGK DCPR7E / .024" (0.6-0.7mm) gap. Ran these for 10K or so and changed during my 12K service and they still looked great and the bike performed flawlessly. Originally when I tuned the bike, we fowled a couple and threw these in and they work great. These can be picked up at most auto parts stores for $2 or so. You can always pull the vertical plug and replace with like item…
Well i ordered up DCPR9EIX's a few days ago. Hope they have the right caps, the CR9EIX iridiums did. I took a look
at the champions in the bike and they look alright but worn. Amazed at how easy it was to change plugs in a monster.
I owned several four cylinder bikes until this point and wow, i'll change the plugs in a duc anyday!