03-11-2013, 09:47am
(03-11-2013, 08:42am)2007busa Wrote: What spark plugs do you guys recommend to put in a Gen 1 and why?
I pulled out the NGK CR9E plugs below after 40,000kms. Bike is running stock ECU, Yoshi TRS mufflers. Plugs are in order of cylinders. Should i put in iridiums?